A billionaire Hamas official, Mousa Abu Marzouk, has stated that he would not support the October 7, 2023, attack on Israel if he had known the destruction it would cause in Gaza. Abu Marzouk, head of Hamas' foreign relations, is the first official to publicly express reservations about the attack. The assault resulted in over 1,000 Israeli deaths and 251 hostages, prompting an Israeli military response that caused 48,000 Palestinian deaths and widespread destruction. Abu Marzouk suggested Hamas might negotiate over its weapons in Gaza, though other officials oppose this. His comments reflect internal divisions within Hamas and potential ceasefire developments.