Israel's President Reuven Rivlin tasked parliament Thursday with finding a new prime minister, as he sought to avoid new elections after incumbent Benjamin Netanyahu and rival Benny Gantz each failed to form a government following recent elections.
The failure has set Israel on course for yet another vote after two inconclusive results.
"Starting today and for 21 days the decision of who to task with forming the government is in the hands of the members of the Knesset (parliament)," Rivlin said, a day after Gantz admitted he would be unable to build a governing coalition.
Parliament will now have until December 11 to find a candidate who can command the support of the majority of the country's 120 MPs or a new general election will be called for early 2020.
It would be the third such poll within 12 months.
Rivlin, who has been urging a compromise to break the political deadlock, met with Knesset speaker Yuli Edelstein Thursday and formally handed over the mandate.
It was the first time in Israeli history the president had been forced to ask parliament to find a government.
"The disruptive politics must end," Rivlin said, addressing MPs from all parties.
He reminded them they have a responsibility to keep the country running and said: "Your political fate is not more important than the fate of an old lady in a hospital."
Polls in September left Netanyahu's rightwing Likud party and Gantz's centrist Blue and White coalition near neck-and-neck.
Netanyahu was first given four weeks to build a governing coalition with smaller parties but failed, with Gantz admitting defeat late Wednesday after a similar period.
Despite having failed in previous attempts, both Netanyahu and Gantz could be nominated in the next three weeks.
All sides say they oppose such new elections.
Netanyahu, who has been premier since 2009 but is fighting a series of corruption allegations, remains in power in an interim capacity.
The country's attorney general could announce a decision regarding Netanyahu's graft cases in the coming weeks.
Former army general Gantz and Netanyahu remain the most likely candidates to take over if new elections are avoided.
The two men had been discussing forming a unity government alongside former defense minister Avigdor Lieberman's Yisrael Beitunu party.
Talks broke down late Tuesday, with Gantz and Netanyahu arguing over who should go first if they were to rotate the premiership.
Both have said they are open to continuing dialogue in the next three weeks.
Addressing Gantz Thursday morning, Netanyahu urged him to come to "personal, immediate negotiations, you and I, without preconditions.
"We can get over the differences. The state is important to all of us."
Gantz on Wednesday night said he was available in the next three weeks for "direct, substantive and fast negotiations in order to establish a government that will take Israel out from the paralysis."
But Israeli media said in reality the talks were deadlocked and the parties were already preparing their campaigns for new elections.
In the first sign of rebellion with Israel’s ruling Likud, Netanyahu’s top party rival, Gideon Saar, called for a leadership primary should the country go into an unprecedented third election in less than a year, as is expected.
Saar, a former aide and senior Cabinet minister under Netanyahu, said he supported the establishment of a unity government to avert such an election, but said he would be a better fit to make that happen than Netanyahu, who was indicted on Thursday.