Trump Mulls NATO Exit as Iran Tensions Mount

Former U.S. President Donald Trump said he is considering taking the United States out of the North Atlantic Treaty Organization (NATO), linking the idea to frustration over allied support during the ongoing conflict with Iran. He made the remarks in an interview with Britain’s Telegraph newspaper on Wednesday, April 1, 2026.

Trump has for years criticized NATO members over what he describes as inadequate defense spending, and the latest comments revive a long-running dispute over burden-sharing inside the alliance. In the interview, he pointed to dissatisfaction with allied assistance tied to the Iran conflict, including limits on access to airspace and airfields.

Any U.S. move to leave NATO would face a legal constraint enacted by Congress in 2023. The law, spearheaded by then-Senator Marco Rubio—now Secretary of State—requires congressional approval for any presidential withdrawal from NATO.

Despite that legislation, Trump has previously said he believes a president can make such a decision without Congress. Rubio has also voiced doubts about the alliance’s value in circumstances where European bases are not available for U.S. military operations, echoing concerns raised in the context of operational access during the Iran conflict.

NATO was founded in 1949 as a defensive alliance and currently has 32 member states. Its central commitment, Article 5, treats an attack on one member as an attack on all, a principle that underpins the alliance’s collective defense posture.

The alliance has expanded in recent years, adding Finland in 2023 and Sweden in 2024. Those accessions increased NATO’s membership to 32 and reinforced the bloc’s footprint in Northern Europe, while also highlighting how membership decisions can carry strategic and political weight across the wider transatlantic relationship.

Trump’s earlier pressure campaign on NATO members was followed by increased defense spending commitments, according to the account provided in the source material. The current dispute described by Trump is tied less to spending targets and more to practical support during the Iran conflict, particularly the reported restrictions affecting U.S. military movement and basing.

Key uncertainties remain around what steps, if any, would follow Trump’s stated consideration, and how the 2023 law would be applied in practice if a withdrawal were pursued. The situation also leaves open questions about how allied governments would respond to renewed U.S. pressure over operational access and support during the conflict with Iran.