DUBAI — Iranians living here wake up every morning to calls from family members whose accounts of wartime Iran reveal in fragments the terror of life under attack by the United States and Israel.

Two weeks into the war that President Donald Trump initially said was intended to force regime change in Tehran, the Iranians living here say their families are mostly huddled at home, trying to avoid both the U.S.-Israeli strikes and supporters of the Islamic Revolutionary Guard Corps (IRGC) patrolling the streets with guns.