Trump’s U-Turn seems partly the result of European leaders, Rutte especially, who worked hard to develop common ground with the U.S. President. It also seems to be the result of growing irritation with Putin. Trump said Monday that Putin talks “so beautifully” when it comes to a ceasefire but “then he’ll bomb people at night. We don’t like that.”

Trump said the United States would put secondary tariffs on countries that do business with Russia if a peace deal is not reached in 50 days.