Iran launched missiles at Israel on Sunday in retaliation for the Israeli strike in Beirut earlier in the day, Israeli officials said. Why it matters: This would be a major regional escalation. It would be the first Iranian missile attack on Israel since the ceasefire was announced on April 8. Iran's military said Israel had "crossed all red lines" in intensifying its attacks in southern Lebanon and targeting the south Beirut suburb of Dahieh. "If it expands its attacks in that area, or responds to Iran's action, it will face more forceful blows, and devastating attacks will be launched" against Israel and its supporters, the military added.