Who is the alleged mastermind behind the Oct. 7 attacks?

ABC News’ Tom Soufi Burridge reports on Yahya Sinwar, the leader of Hamas in Gaza and Israel’s most wanted terrorist, and details his rise to power and his personality. ABC News Live Prime, Weekdays at 7EST & 9EST WATCH the ABC News Live Stream Here: https://www.youtube.com/watch?v=w_Ma8oQLmSM SUBSCRIBE to ABC NEWS: https://bit.ly/2vZb6yP Watch More on http://abcnews.go.com/ LIKE ABC News on FACEBOOK https://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc #hamas #israelhamaswar #news #abcnews