Iran launched missiles at Israel on Sunday in retaliation for an Israeli strike in Beirut earlier in the day, marking the first direct Iranian missile attack since the April 8 ceasefire. Why it matters: This marks a major regional escalation and threatens to unravel U.S.–Iran negotiations and reignite the war, because Israel will likely respond to the Iranian attack. The latest: Iranian state media reported a third wave of missiles had been launched, with Iran's Islamic Revolutionary Guard Cor