Tehran launched more than 100 drones at Israel on Friday morning, Israel's military said, not long after Israel announced it had begun a major operation against Iran, with a wave of airstrikes targeting Iranian nuclear facilities,

Israel has launched unprecedented strikes on Iran, targeting its nuclear program and military leaders. Israel’s spy agency, Mossad, released video of operatives inside Iran before the strikes.

In all, at least 20 senior commanders were killed, two regional sources said. The head of the Revolutionary Guards aerospace force was also reported to be among them.