US President Donald Trump said Thursday he may reduce US military presence in Spain and Italy, one day after he announced that his administration is assessing a possible cut of troops in Germany.

"Yeah, probably will," Trump told reporters at the White House when asked about the possible reduction.

"Why shouldn't I? Italy has not been of any help. Spain has been horrible. Absolutely," said Trump, again slamming European allies for not helping in the US-Israeli war against Iran.

Trump repeated his criticism of German Chancellor Friedrich Merz, claiming Merz "is doing a terrible job." Earlier this week, Merz said the United States is "being humiliated" by Iran.

In a post on Truth Social on Wednesday, Trump said the United States is considering the possible reduction of troops in Germany, and the decision will be made with a determination "over the next short period of time."

Also on Wednesday, Merz sought to downplay his row with Trump, saying that his personal relationship with the US president remains good, calling for a swift resolution to the conflicts in Iran as Germany and Europe are suffering considerably from the consequences of the conflicts.