Israeli Defence Minister Avigdor Lieberman has announced his resignation in protest at a Gaza ceasefire that he called a "capitulation to terror", weakening Prime Minister Benjamin Netanyahu's conservative coalition government.
"Were I to stay in office, I would not be able to look southern residents in the eye," Lieberman told reporters on Wednesday, referring to Israelis subjected to a surge in Palestinian rocket attacks before Tuesday's truce took hold.
Lieberman said his resignation, which will go into effect 48 hours after he submits a formal letter to Netanyahu, also withdraws his far-right Israel Beitenu party from the coalition.
Netanyahu will take over the defence portfolio himself, his party said. The loss of Israel Beitenu's five seats will leave him with control of just 61 of the 120 seats in parliament, a year before Israel's next election.
Political commentators had speculated that Netanyahu, who has high approval ratings despite being dogged by multiple corruption investigations, might bring forward the ballot.
They also saw in Lieberman's decision to quit a bid to poach votes from Netanyahu and far-right cabinet rival Naftali Bennett of the Jewish Home party, ahead of an election.
Netanyahu's Likud played down the option of an early poll.
"There is no need to go to an election during what is a sensitive period for national security. This government can see out its days," party spokesman Jonatan Urich said on Twitter.
The cracks in the coalition could soon widen, however.
In The Jewish Home, which has eight lawmakers, there were calls for Bennett, now education minister, to succeed Lieberman as defence chief.
Bennett did not immediately comment. Were he to withdraw from the ruling coalition, a snap election would be inevitable. But as defence minister, he could be no less a thorn in Netanyahu's side than Lieberman.
Lieberman and Bennett have spoken in favour of harsh Israeli military action against Gaza's dominant Hamas Islamists, even as the government authorised a Qatari cash infusion to the impoverished enclave last week and limited itself to air strikes rather than a wider campaign during this week's fighting.
Israel has fought three wars in Gaza since Hamas took over the enclave in 2007.
