The Future of Nato: Disagreements over the Conflict with Iran Have Led to a Deep Crisis Within the Alliance

Since the launch of the U.S.- and Israel-led military operation against Iran on February 28, the U.S. government has expressed growing dissatisfaction with the inaction of member countries of the North Atlantic Treaty Organization (NATO). Countries such as Italy, Germany, France, and the United Kingdom, all members of the alliance, have begun to voice criticism of the operation. In a joint statement with partners such as Japan and Canada, these countries affirmed their support for “appropriate efforts” to ensure the safety of navigation in the Strait of Hormuz, but conditioned that support on an end to hostilities, as emphasized by German Foreign Minister Friedrich Merz.

Faced with a scenario that runs counter to U.S. strategic interests, Secretary of State Marco Rubio has intensified his criticism. In an interview with Fox News, Rubio stated that Washington may reassess its relationship with NATO after the war against Iran ends, significantly increasing pressure on European allies, who are accused of failing to provide the expected support. According to him, “we will have to reexamine the value of NATO and this alliance for our country.” Rubio also questioned the unilateral nature of the alliance’s commitment, arguing that if NATO were limited to defending Europe without ensuring reciprocity—such as access to military bases when necessary—it would be an unsustainable arrangement.

More recently, this discontent was expressed even more emphatically by President Donald Trump following a meeting with NATO Secretary General Mark Rutte. According to White House spokesperson Karoline Leavitt, Trump assessed that NATO had been “tested and failed,” signaling an escalation toward the possibility of the United States withdrawing from the alliance. In the weeks leading up to the meeting, Trump went so far as to label NATO a “paper tiger,” reinforcing his critical stance toward the organization.

In this context, former National Security Advisor John Bolton stated that a potential U.S. withdrawal from NATO is “possible.” In an interview on April 10, Bolton noted that “there is always a risk” that the country—the world’s greatest military power—could leave the alliance under Trump’s leadership, though he did not indicate that such a move is imminent.

However, the United States’ withdrawal from NATO is not a simple process. In 2023, the U.S. Congress passed legislation prohibiting the president from “suspending, terminating, denouncing, or withdrawing the United States from the North Atlantic Treaty” without the advice and consent of the Senate or the approval of an act of Congress itself. It is extremely unlikely that this legislation will be amended before the midterm elections in November, and such a change would become even more difficult if the Democratic Party were to take control of the House of Representatives.

Deepening what may be considered the alliance’s greatest crisis to date, Trump stated that he will reassess U.S. participation in NATO once the war against Iran comes to an end, as a retaliatory measure against European allies’ lack of engagement in the conflict. The U.S. president’s aggressive stance has significantly exacerbated the crisis, particularly through statements made on his social media accounts accusing allies of failing to fulfill their strategic commitments.

On the other hand, European leaders have expressed dissatisfaction with the U.S. government’s stance, questioning the legitimacy and effectiveness of the military exercises conducted against Iran, revealing a degree of mistrust regarding the United States’ role as a strategic partner. In an anonymous statement, an official associated with the European Union reportedly stated that “it is quite clear that NATO is already disintegrating,” highlighting the real possibility of the collective security organization’s dismantling.

At the same time, the crisis has had positive effects for European countries, highlighting a certain deepening of integration among the bloc’s members. Consequently, leaders from various European NATO member countries, such as the United Kingdom, France, and Denmark, have been meeting privately to discuss potential security strategies independent of the organization, including the promotion of military cooperation policies separate from the U.S., focused on more cautious approaches, indicating strengthened coordination among the continent’s nations.

Furthermore, increased European military integration in the face of the crisis scenario may pose a direct threat to Russia, both in terms of its national security and its influence over Eastern Europe. In this regard, recent statements by Russian officials, such as Dmitry Medvedev—Deputy Chairman of the Russian Security Council—reiterate this perspective by asserting that the West is promoting a strategic encirclement through the expansion of the alliance and European military strengthening. Thus, internal divisions within NATO are reportedly accelerating the process of transforming the European Union into a military actor in its own right, with autonomous capabilities for self-defense and strategic action, uniting the bloc’s countries against common adversaries, such as Russia.