Bbc
We've just been hearing from Israeli Prime Minister Benjamin Netanyahu, who describes Sinwar as having been behind “the worst massacre in our people’s history since the Holocaust".
He says that, while Israel "settled the score with him”, the "task before us is still not complete” - as Israel will continue its fight until the hostages are brought home.
Addressing people in Gaza, Netanyahu says "Sinwar destroyed your lives" and that now that he is dead “Hamas will no longer control" the territory, describing this as as an opportunity for them to free themselves "from its tyranny".
“The return of our hostages is an opportunity to achieve all our goals and brings us closer to the end of the war,” he says