German Chancellor Friedrich Merz on Monday criticized the United States for going into the Iran war without any strategy, saying this also makes it harder to end the conflict.

"The problem with conflicts like these is always the same: it's not just about getting in; you also have to get out. We saw that all too painfully in Afghanistan, for 20 years. We saw it in Iraq," the chancellor said while speaking Monday to students in Marsberg in the Sauerland region of Germany.

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The lack of U.S. strategy and the fact that the Iranians are stronger than previously thought made it hard to end the conflict now, he said.

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"Especially since the Iranians are negotiating very skillfully — or rather, very skillfully not negotiating," he added. "And then letting the Americans travel to Islamabad, only to send them back without any results. An entire nation is being humiliated by the Iranian leadership, especially by these so-called Revolutionary Guards."

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Germany, he said, maintains its offer to send minesweepers in order to help reopen the Strait of Hormuz, but only after the fighting is over.