Israel launched a series of surprise attacks against Iran on Friday morning, hitting nuclear sites, missile facilities and air defenses and killing three top security officials.

Israel has moved to shut schools on Friday as a protective measure as an Iranian retaliatory strike campaign is expected. US State Secretary Marco Rubio confirms Washington was not involved in the strikes.

Israel and Iran have opened a new chapter in their long history of conflict. Israel launched a major attack with strikes early Friday that set off explosions in the Iranian capital of Tehran.

The escalating conflict in the Middle East dragged stocks lower and sent oil prices surging on Friday, marking the latest geopolitical episode to rattle the markets this year. Stocks fell sharply after Israel launched a wide-ranging attack against Iran’s nuclear facilities and military leadership,