The head of Israeli military intelligence said Monday he would resign because of Hamas’ Oct. 7 attack, becoming the first senior figure to step down over his role in the stunning failure to anticipate or quickly respond to the deadliest assault in Israel’s history.

Maj. Gen. Aharon Haliva’s decision could set the stage for more resignations among top Israeli security officials. Hamas militants blasted through Israel’s border defenses on Oct. 7, rampaging through communities unchallenged for hours and killing 1,200 people, most of them civilians, while taking roughly 250 hostages into Gaza.