What's in the new Israel ceasefire proposal Biden announced?

U.S. President Joe Biden on Friday laid out a three-phase ceasefire proposal from Israel to Palestinian Islamist group Hamas to end the war in Gaza that has killed tens of thousands and caused a humanitarian crisis.

The offer calls for a ceasefire, the release of Israeli hostages and Palestinian prisoners, and the reconstruction of Gaza.

A senior U.S. official said the four-and-a-half page plan had been sent to Hamas for review on Thursday, and that it was "almost identical" to a proposal the militant group had already accepted. Prime Minister Benjamin Netanyahu's office said on Friday that it backed the plan.

Here are the three phases as described by Biden in a speech and by U.S. officials at a briefing held later.

PHASE ONE: CEASEFIRE, LIMITED HOSTAGE RELEASE AND ISRAELI WITHDRAWAL

Biden said the first phase of Israel's offer would last for six weeks and would include a "full and complete" ceasefire, the withdrawal of Israeli forces from "all populated areas" of Gaza and the "release of a number of hostages including women, the elderly, the wounded in exchange for release of hundreds of Palestinian prisoners."