Israel pounded Iran for a fifth day in an air campaign against its longstanding foe’s military and nuclear program, as U.S. President Donald Trump warned residents of Tehran to evacuate and suggested the United States was working on something “better than a ceasefire.

Israeli officials also called for those in Tehran to evacuate earlier Monday ahead of its continued military campaign against Iran.

The deadly conflict between Iran and Israel entered its fifth day on Tuesday, with both sides widening their attacks.