Israel's Nuclear Facilities Targeted
Israel denied airstrike on Natanz, first time its facility was targeted.
Israeli military failed to intercept missiles, damaging 10 buildings.
Iran likely used improvised long-range systems.
Netanyahu called situation 'difficult' and vowed to continue attacks.
IAEA reported no nuclear damage or radiation issues.
U.S. deploying 3 ships and 2,500 Marines to Middle East for security.