NATO has said it is working to “understand the details” of a US decision to withdraw 5,000 troops from Germany. The development comes as tensions grow between the Western alliance and the administration of US President Donald Trump.

The decision followed a sharp exchange between Trump and German Chancellor Friedrich Merz. Their disagreement centred on US policy toward Iran and how Washington handled recent diplomatic efforts with Tehran.

Germany downplays the situation

The German government has tried to reduce concerns over the move. Officials described the withdrawal as “anticipated” and suggested it reflects a broader reality—that Europe must take more responsibility for its own defence.

A spokesperson from Germany’s defence ministry said the move highlights the need to strengthen Europe’s role within NATO. The official also noted that the US currently has around 40,000 troops stationed in Germany.

Dispute over Iran fuels tensions

The disagreement escalated after Merz criticised the US approach to Iran. On Monday, he said that the United States was being “humiliated” by Iran’s leadership.

Trump quickly rejected the criticism, saying Merz “doesn’t know what he’s talking about.” Soon after, he raised the possibility of reducing US troop presence in Germany.

The Pentagon later confirmed that the withdrawal would likely happen over six to 12 months.

NATO signals concern over unilateral decision

NATO’s response suggests that the US decision may have been taken without proper consultation with allies. NATO spokesperson Allison Hart said the alliance is now coordinating with Washington to better understand the shift in military positioning.

“This adjustment underscores the need for Europe to continue to invest more in defence and take on a greater share of the responsibility for our shared security,” Hart said.

She also pointed out that NATO members had already agreed last year to increase defence spending to 5 percent of GDP to counter rising threats, especially from Russia.

Trump hints at deeper cuts

Speaking at an event in Florida, Trump indicated that the troop reduction could go beyond the initial figure. He said, “We’re going to cut way down, and we’re cutting a lot further than 5,000.”

Reports from US officials suggest that a brigade combat team currently based in Germany may be withdrawn. In addition, a planned deployment of a long-range artillery battalion could be cancelled. More troop changes may also follow.

European concerns grow over defence ties

At the same time, European governments are reportedly worried about delays in previously agreed arms deals with the United States. These concerns add another layer of uncertainty to transatlantic relations.

As the situation develops, both sides will need to manage growing tensions carefully while maintaining cooperation on defence and security matters.