Hamas leader Yahya Sinwar is unrepentant about the Oct. 7 attacks a year ago, people in contact with him say, despite unleashing an Israeli invasion that has killed tens of thousands of Palestinians, laid waste to his Gaza homeland and rained destruction on ally Hezbollah.

For Sinwar, 62, architect of the Hamas cross-border raids that became the deadliest day in Israel's history, armed struggle remains the only way to force the creation of a Palestinian nation, four Palestinian officials and two sources from governments in the Middle East said.

The Oct. 7 attacks killed 1,200 people, mainly civilians, and captured 250 hostages, according to Israeli tallies, in the deadliest day for Jews since the Holocaust.