Hamas's elevation of the Oct. 7 attacks' architect, Yahya Sinwar, as its leader cements the militant group's strategic ties to Iran, signaling a united front between Tehran and its axis of militias in a conflict with Israel and the U.S.

Hamas’s elevation of the Oct. 7 attacks’ architect, Yahya Sinwar, as its leader cements the militant group’s strategic ties to Iran, signaling a united front between Tehran and its axis of militias in a conflict with Israel and the U.S.