Donald Trump has once again captured international attention with his sharp criticism of NATO, even suggesting the United States might leave the alliance amid the ongoing Iran conflict.

In a recent Telegraph interview, Trump said he is “seriously considering” withdrawing from NATO once the Iran situation ends—a comment that has raised alarm among diplomats and analysts worldwide.

NATO, founded in 1949 with 12 members including the U.S., U.K., France, and Canada, operates on the principle that an attack on one member is an attack on all. Today, the alliance has 32 member countries across North America and Europe.

Trump has long criticized NATO for what he sees as uneven burden-sharing, arguing that member nations spend too little on defense and rely too heavily on the U.S. for military support. In the interview, he called the alliance a “paper tiger,” claiming its strength and collective resolve are exaggerated and not respected by foreign leaders. He added that Russia’s Vladimir Putin does not fear NATO, reflecting what he describes as decades of inconsistent contributions from member countries.

Trump tied his threat to NATO participation with the U.S.-Israel conflict involving Iran, noting a lack of cooperation from some European allies. Several NATO nations have denied U.S. aircraft access to their airspace or bases during operations related to Iran, highlighting disagreements over strategy and NATO’s role.

One key point of dispute is the Strait of Hormuz, a vital shipping route for nearly a fifth of the world’s oil supply, currently affected by the conflict. Trump has called on NATO members to send ships and forces to maintain freedom of navigation—a proposal most European countries oppose, viewing it as outside NATO’s traditional mandate.

Trump has publicly criticized allies such as the U.K. and France for not supporting U.S. objectives, including on his Truth Social platform, where he complained about rising fuel prices linked to disrupted oil shipments. He also questioned the U.K.’s naval strength and criticized French officials for allegedly blocking military flights to Israel, remarks that drew rebukes in both capitals. European leaders stress that their decisions are based on legal constraints and concerns about escalation, not a refusal to support U.S. interests.

The broader context includes Iran’s recent restrictions on oil shipments through the Strait of Hormuz, contributing to rising global energy prices and increasing international tensions. Trump has described U.S. military efforts in the region as nearly complete, even as violence continues and diplomacy remains stalled.

Under U.S. law, the president cannot unilaterally withdraw from NATO without Congressional approval. In 2023, legislation was passed requiring such approval, meaning any formal exit would need lawmakers’ cooperation. Despite this, Trump’s comments have increased tensions, with European officials warning that even talk of withdrawal could weaken NATO’s deterrence and unity.

Supporters argue NATO has adapted over decades to deter threats from Russia and other adversaries, remaining a cornerstone of transatlantic security. Critics claim Trump’s focus on immediate military objectives risks damaging long-standing partnerships.

Senior U.S. officials, including Secretary of State Marco Rubio, have stressed the need to review NATO in light of modern threats, while reaffirming the alliance’s value. Analysts debate whether Trump’s remarks are aimed at pressuring allies to increase defense contributions rather than signaling an imminent exit, though some warn public attacks could deepen divisions and weaken collective security.

European nations are already planning talks on the Hormuz crisis without U.S. involvement, highlighting a widening gap between Washington and its allies. France, Germany, Spain, and Italy have all expressed reluctance to engage militarily. Back in the U.S., lawmakers across parties continue to emphasize the importance of NATO and warn against undermining the alliance, noting that withdrawal could embolden rivals like Russia and China.

Despite heated rhetoric, NATO’s day-to-day operations continue largely unaffected. European leaders continue to prioritize humanitarian and diplomatic efforts as the alliance navigates global security challenges. Opinions vary on whether NATO needs reform or whether U.S. withdrawal would be a strategic error. Public opinion among NATO countries is mixed, with some questioning the cost of collective defense and others stressing the importance of maintaining strong transatlantic ties.

Trump’s statements have reignited global debate over NATO’s future and how it can stay relevant. Diplomats are urging ongoing dialogue to prevent mistrust from eroding decades of strategic cooperation. How NATO adapts to these tensions—and whether it can weather any potential shift in U.S. policy—remains a central question in international security discussions.