US National Security Advisor Jake Sullivan said Friday it is not appropriate for Israel to occupy Gaza in the long-term, as speculation mounts over the post-war future of the territory.
"We do not believe that it makes sense for Israel, or is right for Israel, to occupy Gaza, reoccupy Gaza over the long term," Sullivan told journalists in Tel Aviv.
"Ultimately the control of Gaza, the administration of Gaza and the security of Gaza has to transition to the Palestinians," he said following meetings with senior Israeli officials.
The United States is a key military backer of Israel in its war against Hamas in the Gaza Strip.
Relentless Israeli strikes and a ground invasion of Gaza have killed at least 18,787 people, the health ministry in the Hamas territory said in its latest toll.
The majority of casualties are civilians, Israeli and Palestinian officials say.
The US and Israel concur that the war will last months more, Sullivan said, while there are "intensive discussions" about future stages of the conflict and the aftermath.
"There will be a transition to another phase of this war, one that is focused in more precise ways on targeting the (Hamas) leadership and on intelligence-driven operations" against the militant group, Sullivan said without giving a timeframe.
Separately, a senior US administration official said Washington and Israel have discussed a "shift in emphasis" from widescale bombardment to "narrow surgical military" action.
The latter would focus on "high-value targets, specific military infrastructure," the official said on condition of anonymity.
Washington's latest diplomatic move will see Sullivan travel Friday to the occupied West Bank, where he is due to meet the Palestinian Authority leader Mahmud Abbas.