President Donald Trump on Tuesday escalated diplomatic tensions with German Chancellor Friedrich Merz by accusing him of endorsing Iran’s nuclear program, despite Merz’s recent assertion that Tehran must never acquire a nuclear weapon.
Trump claimed Merz “thinks it’s OK for Iran to have a nuclear weapon” and “doesn’t know what he’s talking about,” remarks that have further strained relations between Washington and key NATO allies.
Merz had previously stated that Iran’s leadership was “humiliating” the United States during ongoing negotiations aimed at ending the conflict, citing instances where U.S. officials traveled for talks but returned without concrete progress. The German leader also questioned the broader U.S. strategy, noting the absence of a clear exit plan from the crisis—a criticism representing one of the most pointed public rebukes yet from a European ally aligned with America.
This exchange occurs amid Trump’s administration clashing with NATO partners over its aggressive regional posture, particularly a U.S.-led blockade around the Strait of Hormuz designed to restrict Iran’s oil exports and military resupply. Several European nations, including Germany, have resisted direct involvement in the blockade, citing concerns about escalation risks and the legal and economic implications of disrupting one of the world’s most critical shipping corridors.
The growing divide has deepened rifts within NATO, with European officials privately and publicly advocating for diplomatic solutions while the Trump administration continues to escalate economic and military pressure on Iran. Merz’s remarks underscored persistent doubts among some allies regarding not only the effectiveness of U.S. tactics but also whether Washington has articulated a viable path to resolving the conflict.
Trump framed allied hesitation as a failure to confront Iran decisively, insisting that stronger collective action—including support for the Hormuz blockade—is necessary to compel Tehran into concessions on both its regional activities and nuclear program.
