The U.S. commander in chief again urged the Islamic republic to reach an agreement “before it’s too late.” Trump’s comments during the gathering of world leaders came shortly before Israel’s ambassador to the U.S. laid out what it would take from Tehran for his government to end its strikes on what he dubbed “the head of the snake.”

Trump's sometimes contradictory and cryptic messaging about the conflict between close U.S. ally Israel and longtime foe Iran has deepened the uncertainty surrounding the crisis.

Israel's air campaign on the Iranian capital appeared to broaden on the fourth day of an intensifying conflict after it issued warnings on Monday for about 300,000 people in Tehran to evacuate ahead o...