The recent assassination of Ismail Haniyeh, Hamas’ top political leader, in Tehran by a predawn airstrike has sent shockwaves through the Middle East. The incident, which both Iran and Hamas attribute to Israel, threatens to escalate ongoing tensions into an all-out regional conflict. The killing has already prompted vows of revenge from Iran’s supreme leader and warnings of challenging days ahead from Israeli Prime Minister Benjamin Netanyahu. This article explores the potential consequences of this assassination on the region’s geopolitical landscape, including the risks of broader warfare and its impact on cease-fire negotiations in Gaza.