From a bomb shelter at Tel Aviv, our correspondent reports of the wail of sirens signaling incoming ballistic missiles the length of Israel Sunday evening.

Iran began its retaliation against Israel for its surprise attack with over 100 ballistic missiles. The Israel Defense Forces announced the expected retaliation, with Iranian state media showing footage purporting to be some of the launches.

Iran launched dozens of ballistic missiles toward Israel on Friday night in retaliation for Israel's surprise attack early Friday. Israel struck at the heart of the Iran's nuclear program, killing several nuclear scientists as well as high-ranking military leaders, according to Israeli officials.

Israeli Iron Dome air defense system fire to intercept missiles over Tel Aviv as others explode and traces fly over Jerusalem during a missile attack by Iran in retaliation for deadly Israeli attacks on nuclear sites and military leaders.

Israel and Iran have traded missile strikes for a third straight day. Israel on Sunday hit targets in Tehran including the Defense Ministry and sites it claims are tied to Iran’s nuclear program.