Israel unleashed airstrikes across Iran for a third day on Sunday and threatened even greater force as some Iranian missiles evaded Israeli air defenses to strike buildings in the heart of the country.

Iran launched multiple deadly waves of missiles and drones toward Israel into Saturday morning following Israel’s unprecedented strikes aimed at destroying Iran’s nuclear program and decapitating its military leadership.

Iran will stop sharing information with the International Atomic Energy Agency about new and special measures to protect its nuclear materials and equipment, Iranian nuclear negotiator Kazem Gharibabadi told Iranian state media,

Experts suggest the U.S. has a strategic opportunity to leverage Iran's weakened position for a nuclear deal after Israel's targeted strikes on Iranian nuclear and military sites.

The two sides were scheduled to meet for a sixth round of negotiations on Sunday. Oman, which was set to host the talks, said on Saturday that this round had been canceled.

Israel's PM says it struck Iran at the heart of its "weaponization programme", but Iran insists its nuclear facilities were peaceful.

Former MSNBC host Chris Matthews criticized former President Obama's Iran nuclear deal following Israel's strike on Iran, saying Trump was fair to call the deal a "joke."