Israel targeted nuclear and military sites in Iran in airstrikes early Friday morning.The strikes are a major escalation that threatens to expand into a wider regional conflict.These are five key questions as the conflict continues.

Israel’s ongoing attacks on Iranian nuclear sites, generals, and scientists killed 78 people and wounded more than 320 on Friday, Iran’s ambassador told the U.N. Security Council, but he said “the overwhelming majority” of victims were civilians. Israel described the new wave of hostilities as the beginning of “Operation Rising Lion.”

Morocco’s Justice and Development Party (PJD) strongly condemned the Israeli airstrikes on Irancarried out Thursday night, denouncing them as a “treacherous Zionist aggression” that targeted multiple Iranian cities and resulted in casualties among both civilians and military officials.

Sirens sounded in Israel as Iran launched dozens of ballistic missiles in retaliation for Israel's strikes on its nuclear facilities.

Israel began Operation Rising Lion to degrade Iran's nuclear facilities and aerial capabilities, and take out top military leaders.

Israel’s military and intelligence operation against Iran that began Thursday night is unprecedented in scale and scope. I was on live with Anderson Cooper as it unfolded and the full extent of the attack began to clarify.

An aggressive counterattack risks escalation. But giving in to U.S. and Israeli demands is an unlikely alternative.

"This confrontation will not end with last night's limited actions and Iran's strikes will continue, and this action will be very painful and regrettable for the aggressors," Fars reported, citing senior military officials.