The United Nations Security Council will vote later on Monday on U.S.-drafted resolution backing a proposal outlined by President Joe Biden for a ceasefire between Israel and Palestinian militants Hamas in the Gaza Strip.

The U.S. finalized its text on Sunday after six days of negotiations among the 15-member council. It was not immediately clear whether veto powers Russia and China would allow the adoption of the draft.

A resolution needs at least nine votes in favor and no vetoes by the U.S., France, Britain, China or Russia to pass.

Biden laid out a three-phase ceasefire plan on May 31 that he described as an Israeli initiative. Some Security Council members questioned whether Israel had accepted the plan to end the fighting in Gaza.

The draft resolution welcomes the new ceasefire proposal, "which Israel accepted, calls upon Hamas to also accept it, and urges both parties to fully implement its terms without delay and without condition."