Qatar’s foreign ministry says the ceasefire between Israel and Hamas will go into effect at 8:30 a.m. (0630 GMT) on Sunday

A team of doctors in Israel is preparing for the return of the hostages from Gaza with the expectation that many are likely to have severe, life-threatening complications from spending more than a year in captivity.

Israel and Hamas finalize a historic cease-fire and hostage deal set to begin Sunday. The agreement includes phased releases, intense negotiations and ongoing security concerns.

The ceasefire as agreed to in Qatar is set to last 42 days. Over that period, 33 hostages are expected to be freed in exchange for hundreds of Palestinian prisoners, there will be a slow withdrawal of the Israeli military from urban centers in Gaza and a surge of humanitarian aid.

Israel’s security Cabinet has recommended approval of a ceasefire deal after Prime Minister Benjamin Netanyahu confirmed an agreement had been reached that would pause the 15-month war with Hamas in Gaza and release dozens of hostages held by militants there.

Follow NBC News' live coverage as Israel and Hamas reach an agreement on the ceasefire deal after Israel delayed vote.

Israel's full cabinet now needs to vote on the deal. If it's approved, it would be expected to be implemented on Sunday.

Israeli Prime Minister Benjamin Netanyahu accused Hamas of backing out of a cease-fire deal to release hostages and end the war in Gaza, which has raged for more than a year.

The Israeli security cabinet approved a ceasefire deal on Friday, potentially allowing the first hostages from Gaza to return as early as Sunday and ending 15 months of conflict.

The Israeli cabinet approved the deal Friday, and the full cabinet is expected to convene later in the day to vote on it.

UNITED NATIONS, January 18. /TASS/. Russia's envoy to the UN, Vasily Nebenzya, blamed the current crisis in the Middle East on disastrous US policies.