Blinken says Israel agrees to a U.S.-backed proposal for a cease-fire and calls on Hamas to do same

Pretty much. It's all about optics now, because the US knows that they can't really change the minds of the crazy ethno nationalists who run Israel, and that they need to show they're "doing something".

But we all know there are plenty of Zionists in congress who will prevent any form of ceasefire where Israel doesn't take over more ground. It's what they've been doing for decades.