President Donald Trump said on Wednesday morning that the U.S. could soon launch additional strikes against Iranian power plants and bridges, raising the prospect of a broader military campaign against Tehran as he accused Iran of dragging the U.S. along in diplomatic negotiations.

The president’s comments to Fox News’ Trey Yingst came hours after the U.S. military announced it had targeted Iranian air defense, ground control and surveillance radar sites in response to Iran downing a U.S. Army helicopter on Monday. Iranian state media, meanwhile, claimed attacks on U.S. military facilities in Bahrain, Kuwait and Jordan.

Trump said in a post on Truth Social on Wednesday morning that Iran had “taken too long to negotiate a deal that would have been great for them” and warned that Tehran would now “have to pay the price.”

Trump made similar threats regarding targeting Iranian power plants and bridges as a way to escalate hostilities when he was unsatisfied with negotiations in April, though such strikes were not carried out. 

Trump also disclosed new details about the incident that precipitated the latest U.S. action: According to the president, an Iranian drone became lodged between the two pilots of a U.S. Apache helicopter who guided the helicopter into the sea, where they were rescued “for the first time in U.S. military history” by an unmanned sea drone.