The Israeli government concluded the terrorist leader was killed during an Israeli military operation in the Gaza Strip on Oct. 16.
“I called [Israeli Prime Minister Benjamin Netanyahu] to congratulate him on getting Sinwar,” Biden told members of the press as he landed in Berlin, Germany for a state visit this week. “He had a lot of blood in his hands. American blood, Israeli blood, and others.”
Sinwar, 61, has served as the top Hamas figure in Gaza since 2017, and as the chairman of the Hamas political bureau since August. He was seen by Israel as the mastermind behind the Oct. 7, 2023, invasion, during which Hamas gunmen carried out killings and kidnappings across southern Israel, leaving about 1,200 people dead, thousands more wounded, and 251 abducted as hostages.
Israeli forces have been working to end Hamas’s hold over the Gaza Strip in the year since the 2023 attacks.
Israeli forces have also worked to recover those people taken captive more than a year ago. About 100 hostages remain in the Gaza Strip.
“That obstacle no longer exists. But much work remains before us,” he added.
The Biden administration has since positioned the news as an opportunity to advance a cease-fire to end the ongoing Gaza war.
Speaking with reporters aboard Air Force One, en route to Germany, White House national security adviser Jake Sullivan reiterated the Biden administration’s position that Sinwar posed a significant obstacle to a cease-fire deal in Gaza.
Hamas has sought to condition the release of the remaining Gaza hostages on the Israeli government releasing potentially hundreds of Palestinian detainees and withdrawing its forces from the Gaza Strip. The Biden administration signaled progress toward a deal in May, but talks stalled out by August.
Sullivan said “there were other obstacles too along the way” but Sinwar was “a critical one” and his death does “present an opportunity to find a way forward that gets the hostages home, brings the war to an end, brings us to a day after.”
The national security adviser declined to say whether such a cease-fire could be possible by the end of the year, stating “I have long since given up on making predictions or drawing timelines.”
Republican political leaders joined in celebrating the news.
“The ultimate revenge against Iran and their terrorist proxies is to replace terrorism and hate with sustainable security, peace and prosperity for the region,” Graham said.