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.

Israel has issued an "urgent warning to Iranian citizens" to evacuate areas close to military sites after fresh exchanges of strikes between the two countries overnight raised fears of further escalation.

Iran conflict could open opportunities for Russia to possibly become a power broker to help end the confrontation.

Fear and worry grip Iranians as Israel vows to continue attacking the Islamic Republic over its nuclear program, with many fleeing the bigger cities, including the capital Tehran, in search of safer areas.

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