U.S. President Donald Trump warned late on Thursday ‌about striking and destroying bridges and electric power plants in Iran.

The U.S. military “hasn’t even started destroying what’s left in Iran. Bridges next, then Electric Power Plants,” Trump wrote on Truth Social.

His post said that Iran’s leadership “knows what has to be done, and has to be done, FAST!”

Trump said in a televised speech on Wednesday that the war could escalate if Iran did not give in to Washington’s terms, with strikes on its energy and oil infrastructure possible.