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.

Follow live updates as Iran retaliates after Israel strikes nuclear facilities. Stay informed with real-time news and developments.

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.

DUBAI, United Arab Emirates (AP) — Israel launched an expanded assault on Iran on Sunday, with direct strikes targeting its energy industry and Defense Ministry headquarters, while Tehran unleashed a fresh barrage of missiles blamed for the deaths of four people and injuries of many others.

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.

Maj. Gen. Yadlin, who flew in the 1981 Osirak reactor strike, explains why Israel's current operation against Iran represents a complex, multi-week campaign.

Three people have been killed in Israel, according to officials and local media, with both sides saying the strikes will continue.

NEW YORK (Reuters) -Dual risks kept investors on edge ahead of markets reopening late on Sunday, from heightened prospects of a broad Middle East war to U.S.-wide protests against U.S. President Donald Trump that threatened more domestic chaos.