What happened?
On 27 April, German Chancellor Friedrich Merz stated in Marsberg that Washington had been “humiliated” by the Iranian leadership. Merz urged a rapid end to the war as it was already impacting Germany’s economy. He further criticised the US campaign as “ill considered”, drawing comparisons with previous interventions.
On 28 April, Trump lashed out at Merz on social media, accusing him of suggesting that Iran having a nuclear weapon was acceptable. He went on to defend the war, arguing that other leaders should have taken such a step long ago.
On 30 April, the confrontation escalated further as Trump warned that the US was reviewing the possible reduction of its troops in Germany. He added that Merz should instead focus on the Russia–Ukraine war and address issues within his “broken country.”
On 01 May, the US Secretary of Defence ordered the withdrawal of approximately 5,000 troops from Germany, with the move expected to be completed over the next six to twelve months. Trump also indicated a potential withdrawal of troops from Italy and Spain due to their lack of support. An internal Pentagon document reportedly outlined options to further penalise NATO allies deemed insufficiently supportive of the war with Iran.
What is the background?
1. American military presence in Germany
Germany hosts one of the largest US military deployments overseas, with over 36,000 personnel stationed across major bases as of December 2025. Key installations include Ramstein Air Base and Landstuhl Regional Medical Centre. Established after World War II, this presence has long served a dual purpose: providing forward defence for Europe while extending US global military reach.
The US–Germany relationship remains central to NATO. Germany hosts critical command infrastructure while serving as a bridge between the US and Europe. This interdependence has helped the alliance sustain despite recurring tensions. Beyond troop deployments, cooperation extends to shared intelligence, joint exercises and long-standing interoperability.
2. Frictions between Trump and the German leaders
There is a history of differences between Trump and the German leadership. During Trump’s first term, he had a difference with Angela Merkel over defence and trade. Trump proposed troop reduction during his first term, which was later halted by Joe Biden in 2021. Chancellor Merz was initially seen as aligned with Trump, but differences emerged over the US war in Iran. Trump views the war as a decisive and necessary intervention to eliminate a nuclear threat, one that other presidents lacked the resolve to undertake.
3. Growing European criticism of US-Iran policy
Germany’s concerns reflect a wider European unease. Trump’s response also reflects broader US criticism of Europe and the transatlantic partnership. The closure of the Strait of Hormuz led to a spike in energy prices in Europe. The UK criticised the lack of a clear exit strategy, Spain refused to allow its bases to be used for military operations, and France raised concerns about limited diplomatic engagement. For most of the European leaders, the US launched the war without consulting most NATO allies. Merz’s remarks highlight a broader European concern, and Trump’s response reflects his larger cynicism towards Europe.
What does it mean?
First, a structural fracture in the transatlantic order. The US–Germany relationship has navigated disagreements before, over the Iraq War and energy policy, but these disputes were managed through diplomatic channels. The current rift, played out through social media exchanges and troop movements, suggests a qualitative shift in Washington's view of its European commitments.
Second, Trump’s frustration reflects a broader transactional worldview that allies must contribute, not just comment. Trump criticised NATO allies for not sending their navies to help open the Strait of Hormuz and stated he was “very disappointed.” With the war already costing at least USD 25 billion, Trump expects burden-sharing, not criticism. The troop withdrawal is less a military decision and more a political projection.
Third, Germany’s tough choices. Berlin cannot easily replace the security architecture provided by the American military presence, and its economy is already facing the costs of the Strait of Hormuz closure. Merz insists that Germany’s compass “remains focused on a strong NATO and a reliable transatlantic partnership,” but the space for independent decision making within the alliance is visibly narrowing.
