Demonstrators wave a huge Iranian flag in their anti-Israeli gathering in front of an anti-Israeli banner on the wall of a building at the Felestin (Palestine) Sq. in Tehran, Iran, Monday, April 15, 2024. World leaders are urging Israel not to retaliate after Iran launched an attack involving hundreds of drones, ballistic missiles and cruise missiles. The sign on the banner reads in Hebrew: "Your next mistake will be the end of your fake country." And the sign in Farsi reads: "The next slap will be harder." (AP Photo/Vahid Salemi)