US President Trump criticized German Chancellor Friedrich Merz for his comments on the Iran war and urged him to focus on ending the Russia/Ukraine conflict and addressing issues in Germany. Trump's remarks included a threat to reduce US troops in Germany, which has raised concerns about the transatlantic alliance. Merz defended the US while expressing concerns about its strategy and the humiliation faced by the nation in negotiations with Iran. NATO experts suggest that Europe may need to prepare for a future without US support.