U.S. Global Influence Under Pressure: Ukraine, Iran and the New World Order
On 10 October 2026, US President Donald Trump declared that Ukraine should get a new president who could negotiate a deal with Russia.
His remarks came after he criticised Ukrainian President Volodymyr Zelenskyy for authorising attacks on Russian oil refineries and announced an arrangement with Russian President Vladimir Putin to bring Russian diesel into global markets in an attempt to ease American fuel prices.
The development has exposed a growing tension in Washington's approach to the war. The United States is pressuring Ukraine to change its military strategy while pursuing an energy arrangement with the country that invaded it. Associated Press reporting describes the disagreement and the concerns raised by European allies.
But the significance of Trump's remarks extends beyond his relationship with Zelenskyy. They arrive as the United States faces the consequences of its own war with Iran, a conflict that has disrupted energy markets, placed the Strait of Hormuz at the centre of international security and raised questions about the limits of American military power.
Taken together, Ukraine and Iran present Washington with a difficult geopolitical problem. The United States remains one of the world's most powerful military, financial and technological actors.
Yet possessing power is not the same as being able to translate it into predictable outcomes. A superpower may have the capacity to launch military operations, impose sanctions and influence international markets while still struggling to secure the political results it wants.
This is where the debate about U.S. global influence becomes important. The question is not simply whether America remains powerful. It is whether its decisions are strengthening the alliances, economic relationships and international confidence on which its leadership depends.
How the Ukraine and Iran Wars Are Testing U.S. Global Influence
The Ukraine war has always extended beyond the territory being contested. Since Russia's full-scale invasion in February 2022, European governments have had to reconsider defence spending, energy dependence and the assumptions underlying their security arrangements. The conflict has also affected food supplies, industrial costs and relations between Russia and countries that continue to buy its commodities.
For Washington, support for Ukraine has served several purposes. It has helped Kyiv resist Russian military expansion, reassured European allies and demonstrated the consequences of invading another sovereign state. At the same time, the war has placed continuing demands on American military resources, public finances and diplomatic attention.
Trump's latest remarks introduce another layer of uncertainty. By publicly suggesting that Ukraine needs a different president, he has shifted the argument from the terms of a potential settlement towards the legitimacy of the Ukrainian leadership's negotiating approach.
His criticism also raises a fundamental question about the relationship between a country's right to defend itself and the preferences of the powerful partners supplying its weapons, intelligence and financial assistance.
The immediate dispute concerns Ukrainian attacks on Russian oil refineries. Kyiv regards strikes on energy infrastructure as a way to weaken the financial and logistical machinery sustaining Russia's military campaign.
Washington, meanwhile, has become increasingly concerned about the effects of the conflict on fuel prices and the availability of diesel. According to the Financial Times, American officials have warned that Ukraine's refinery strikes could jeopardise intelligence-sharing, adding pressure to an already strained relationship.
The disagreement reveals competing calculations. Ukraine wants to reduce Russia's capacity to wage war. The Trump administration wants to bring the conflict towards a settlement while limiting its economic and political costs at home. European governments must consider both the future of Ukraine and the credibility of the wider security arrangements on which they rely.
These objectives are not necessarily compatible. A strategy intended to lower fuel prices in the United States may create additional revenue opportunities for Russia. Pressure intended to bring Kyiv to negotiations may instead weaken Ukrainian confidence in Washington. And a settlement that prioritises immediate economic relief may leave European governments questioning whether their long-term security interests have been adequately protected.
The result is a debate about more than diplomatic style. It concerns the conditions under which American power is exercised and how its allies interpret the decisions that follow.
For a deeper examination of these wider consequences, FTN has explored the argument in The Ukraine War Was Never Just About Ukraine: The New World Order. The central point is that the war's significance lies not only in the battlefield outcome but also in the changes it is producing across defence, energy, technology and international alignment.
Trump, Zelenskyy and the Changing Meaning of American Alliances
An alliance is more than a collection of military capabilities. It depends on expectations about how partners will behave when their interests diverge, when a crisis becomes expensive and when domestic political priorities compete with international commitments.
The relationship between Washington and Kyiv illustrates this problem. Ukraine depends heavily on Western support, but it also has its own military objectives, domestic political realities and understanding of the concessions it can accept.
The United States possesses considerable leverage through intelligence, weapons, finance and diplomatic access. Yet leverage does not automatically produce agreement about what a peace settlement should look like.
Trump's public demand for a new Ukrainian president raises questions about how Washington intends to use that leverage. His administration argues that Ukraine must make difficult choices to end the war.
Critics of this approach contend that excessive pressure on Kyiv could reward Russian aggression or leave Ukraine vulnerable to a future attack. Moscow, meanwhile, has its own objectives and is unlikely to abandon them simply because Washington seeks a rapid settlement.
These are competing interpretations of what would bring the war to an end. They should not be confused with proof that the United States has abandoned NATO or formally shifted its allegiance towards Russia. The more immediate concern is that uncertainty over American policy may influence how allies plan for the future.
European governments must ask what happens if US support becomes more conditional, changes with domestic political priorities or is used to secure economic arrangements that conflict with European sanctions policy. They must also consider whether their own defence industries and military capabilities can compensate for any reduction in American assistance.
The concern is not new. European leaders have spent years debating strategic autonomy, burden-sharing and the need to develop greater capacity to defend the continent. The war in Ukraine has accelerated those discussions.
Trump's latest statements add urgency because they suggest that support for Kyiv can become part of a wider negotiation involving American fuel prices, relations with Moscow and the political priorities of the White House.
A former military chief's warning about American reliability, if accurately represented, would add to this debate. But one retired general's assessment should not be treated as the official position of Norway, NATO or every European government. The stronger evidence lies in the concrete policy disagreements already visible between Washington, Kyiv and European capitals.
The credibility of an alliance is shaped not only by what its leaders promise but also by what they do when the costs rise. If European governments conclude that American commitments have become less predictable, they may invest more in independent defence capabilities, deepen cooperation among themselves, or diversify their diplomatic relationships. Such decisions would not necessarily mean a break with Washington. They could instead reflect a desire to reduce exposure to uncertainty.
For the United States, however, the consequences matter. American influence in Europe has long rested partly on the willingness of allies to coordinate their security policies with Washington. If that coordination weakens, the United States may retain its military strength while finding it harder to organise collective responses to future crises.
The Iran War, the Strait of Hormuz and the Limits of U.S. Energy Power
The conflict with Iran exposes another dimension of American influence: the difference between possessing military superiority and securing the uninterrupted movement of goods through strategically important waterways.
The Strait of Hormuz is one of the world's most important energy chokepoints. It connects the Persian Gulf to international markets, carrying a substantial share of global oil and liquefied natural gas shipments. Disruption in this narrow passage can affect producers, shipping companies, insurers, manufacturers and consumers thousands of kilometres away.
The United States and Israel launched strikes against Iran on 28 February 2026. Iran responded militarily and used threats and attacks against shipping to increase the economic pressure associated with the conflict.
A ceasefire arrangement and memorandum of understanding helped interrupt large-scale fighting, but the central disputes over the nuclear programme, sanctions and maritime access have remained unresolved. The Council on Foreign Relations' conflict tracker documents the continuing tensions and the difficulty of reaching a durable settlement.
The strategic importance of Hormuz is not simply that oil passes through it. The waterway demonstrates how a state that cannot match American military power directly can nevertheless exploit a geographic vulnerability to impose costs on a much larger opponent.
Iran does not need to defeat the United States in a conventional military confrontation to influence international calculations. Threats to commercial shipping can raise insurance premiums, delay deliveries, increase fuel prices and force governments to consider emergency measures. The resulting pressure can extend from energy markets into domestic politics, industrial production and diplomatic negotiations.
Research published by Brookings explains why the United States remains exposed to oil-price shocks even though it is a major oil producer. Petroleum is traded in interconnected global markets. Higher international prices can therefore affect American motorists, transport operators, farmers and businesses regardless of how much oil the United States produces at home.
This helps explain why the Iran war has become a test of American political and economic influence as well as military capability. Washington may be able to strike Iranian targets, deploy naval forces and impose sanctions. But those instruments cannot automatically guarantee that commercial shipping will return to normal or that energy prices will fall.
The distinction is critical. Military action can destroy equipment and damage infrastructure, yet the political and economic consequences may persist long after a particular operation ends.
If shipping remains disrupted, the costs spread beyond the immediate combatants. Import-dependent economies face higher bills, businesses confront uncertain delivery schedules, and governments must balance support for their allies against the needs of their own populations.
The pressure is particularly complicated for the Trump administration because fuel prices connect foreign policy directly to household costs.
A conflict presented as a demonstration of American strength can become a domestic political liability if it produces sustained economic pain without a clear and durable strategic outcome.
That does not mean Iran has gained the ability to dictate American policy or that US military power has become irrelevant.
It means that power operates within constraints. Geography, global markets, shipping networks and political tolerance for economic costs can limit what military superiority achieves.
The argument is explored further in FTN's article, Iran MOU and Strait of Hormuz: Why Trump Was Forced to Sign the Deal. The wider lesson is that access to energy routes can become a source of geopolitical leverage, particularly when disruption threatens economies that depend on predictable global trade.
From Military Dominance to Global Leverage: Who Shapes the New World Order?
The Ukraine and Iran conflicts differ in their causes, geography and immediate objectives. Russia's invasion of Ukraine is a war over territory, sovereignty and European security. The confrontation with Iran centres on military capabilities, nuclear questions, regional security, sanctions and access to strategic waterways.
Yet both conflicts expose a shared challenge for American foreign policy: the difficulty of converting superior resources into outcomes that remain politically and economically sustainable.
In Ukraine, Washington can influence the flow of weapons, intelligence and financial assistance, but it cannot guarantee that Kyiv will accept every proposed settlement or that Moscow will abandon its objectives.
In the Gulf, American forces can conduct military operations and protect some shipping, but they cannot remove the economic vulnerability created by the concentration of energy traffic through a narrow maritime passage simply by demonstrating firepower.
This is one of the central questions in the changing global order. Power is not disappearing from the international system. Rather, its practical effects depend on the ability of states to influence the decisions of others while managing the costs of their own actions.
For decades, American leadership has rested on a combination of military reach, financial markets, technological innovation, diplomatic networks and alliances. These assets reinforce one another.
Allies that trust Washington are more likely to coordinate sanctions, share intelligence and support collective security arrangements. A stable international trading system also helps sustain the financial and commercial networks through which American influence operates.
But the relationship works in both directions. When policy becomes unpredictable, allies may seek alternatives.
When sanctions produce economic costs for partners, those governments may become less willing to follow Washington's lead. When military operations threaten global energy supplies, countries that depend on those supplies may pursue their own arrangements to protect access.
This is where the contest over energy becomes inseparable from the wider struggle for geopolitical influence.
Russia's role in the Ukraine war is linked to its energy revenues, which help sustain its economy and war effort. China's industrial expansion depends on reliable access to energy and international trade.
European economies must balance energy security with their commitments to Ukraine and their relationship with Washington. Gulf states must protect their infrastructure and export routes while navigating the consequences of regional conflict.
These calculations create opportunities for countries seeking to diversify their partnerships. They may expand energy purchases from different suppliers, invest in alternative transport routes, build strategic reserves or pursue diplomatic arrangements that reduce dependence on a single power.
Such choices do not necessarily signal an anti-American alignment. Often, they are practical responses to economic exposure.
FTN examined this relationship in The U.S. War for Energy Dominance Seeks Control Over China and Europe. Energy is not merely a commodity in this contest. It is a strategic resource that affects industrial competitiveness, diplomatic freedom and the capacity of states to withstand external pressure.
The Iran war adds a further complication. Even a major energy producer can remain vulnerable to a crisis affecting international shipping. Even a powerful navy can face difficulties guaranteeing uninterrupted trade across several vulnerable routes. And even a government capable of imposing severe costs on an adversary must consider the effects of those costs on its own economy and its relationships with other states.
This is not evidence that the United States has suddenly lost its global position. It is evidence that American leadership depends on more than the capacity to use force. The ability to sustain cooperation, maintain economic confidence and develop a credible diplomatic endgame remains essential.
Why Europe May Begin Preparing for a Less Predictable Washington
For European governments, the combination of the Ukraine war and the Iran conflict creates an uncomfortable strategic dilemma.
Europe needs American military capabilities, particularly in intelligence, logistics, air defence and the deterrence of Russian aggression. At the same time, European leaders must prepare for the possibility that Washington's priorities will diverge from theirs during a crisis.
The response does not have to be a complete separation from the United States. Building greater European defence capacity could make the alliance more resilient rather than destroy it. Shared procurement, stronger ammunition production, better air and missile defence, and improved coordination could reduce the risks associated with dependence on any single partner.
The political challenge is that these changes require money, time and agreement among countries with different threat perceptions. Governments must decide which capabilities to prioritise, how to distribute the financial burden and how to ensure that new European initiatives complement existing NATO structures.
The Iran war also raises questions about the geographic limits of European security planning. A disruption in the Gulf can affect European energy prices and supply chains even when European territory is not directly involved in the fighting. Protecting economic interests therefore requires attention to maritime security, energy diversification and diplomatic engagement beyond the continent.
Europe faces a choice between treating these events as temporary crises and using them to reconsider its long-term strategic exposure. The latter approach would require a realistic assessment of both American strengths and the uncertainty surrounding future decisions in Washington.
It would also require Europe to recognise that greater autonomy is not cost-free. Developing independent capabilities may reduce some vulnerabilities, but it cannot quickly replace every American military asset or eliminate Europe's dependence on global energy and trade networks.
For Washington, the message is equally important. Allies that invest more in their own security may become more capable partners. But if they believe that American support is unreliable, they may also become more willing to make independent arrangements that do not always serve US interests.
The challenge is therefore not simply to persuade allies to spend more on defence. It is to maintain sufficient confidence in the alliance that those investments strengthen collective security rather than accelerate fragmentation.
The Economic Repercussions Could Outlast the Fighting
Wars are often judged through territorial gains, military losses and the terms of a ceasefire. Their broader consequences are measured over much longer periods.
The Ukraine war has transformed European defence planning, disrupted established energy relationships and accelerated efforts to diversify supply chains. The Iran conflict has shown how a regional confrontation can affect oil prices, shipping insurance, transport costs and the economic calculations of governments far beyond the Middle East.
For countries in Africa and other energy-importing regions, these disruptions can be especially significant. Higher fuel costs raise the price of transporting food and goods, increase pressure on businesses and place additional strain on household budgets. Governments may face more expensive imports even when they have no direct involvement in either conflict.
The consequences also extend to investment. Companies making decisions about factories, logistics, electricity and distribution need predictable energy supplies and stable transport routes. Sustained uncertainty can delay projects, increase financing costs and encourage businesses to reconsider where they source goods or locate production.
These effects illustrate why the global order is not shaped only in diplomatic meetings or on battlefields. It is also shaped by decisions made by shipping companies, energy producers, manufacturers, financial institutions and governments responding to changing costs.
The United States retains significant advantages in this environment, including deep capital markets, advanced technology, substantial energy production and a wide network of security partnerships. These advantages provide resilience. But they do not insulate the country from global price shocks or guarantee that other states will accept American preferences.
The Iran war's economic effects have also sharpened the connection between foreign policy and domestic political pressures. When international decisions raise costs at home, leaders face stronger incentives to seek rapid agreements, adjust sanctions or pursue commercial arrangements that ease immediate pressure. Such decisions may be defensible as short-term economic measures, but they can create strategic tensions if allies believe they undermine longer-term security objectives.
The diesel arrangement between Trump and Putin illustrates this dilemma. Lower fuel costs may offer immediate relief to American consumers, but European governments and Ukrainian officials have raised concerns about the implications of Russian energy revenues for Moscow's ability to sustain its war. The dispute demonstrates how a decision intended to solve one economic problem can create a separate diplomatic and security problem.
The broader lesson is that economic resilience and geopolitical influence cannot be separated. A state that can protect its economy from external shocks has more room to pursue long-term strategic goals. A state whose policies repeatedly produce unexpected costs may find that its freedom of action narrows, even if its military capabilities remain formidable.
About the Author
Tinka C. Muhwezi is the Editor-in-Chief and Producer at Frontier Tech Network (FTN), a media and technology platform covering world news, science, technology, innovation and emerging trends.
With over 25 years of experience in science journalism, broadcasting, storytelling, video production and digital media strategy, he brings a multidisciplinary perspective to global developments.
Tinka C. Muhwezi has also taught mass communication, multimedia video and photography at universities and has worked across journalism, media production, digital security and technology.
Through FTN, he combines journalism, research and visual storytelling to examine major geopolitical, technological and social developments shaping the modern world.
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