Israel's foreign minister has confirmed that Israeli troops in Gaza have killed Hamas' top leader Yahya Sinwar, a chief architect of last year's attack on Israel that sparked the war. Sinwar has topped Israel's most wanted list since the beginning of the Israel-Hamas war just over a year ago, and his killing strikes a powerful blow to the militant group. There was no immediate confirmation from Hamas of his death. Foreign Minister Katz called Sinwar's killing a military and moral achievement for the Israeli army. The assassination of Sinwar will create the possibility to immediately release the hostages and to bring a change that will lead to a new reality in Gaza - without Hamas and without Iranian control, he said in a statement.