Netanyahu's government has been angered by pledges from the governments of France, the United Kingdom, Canada, Australia and now Belgium, to formally recognise a Palestinian state when world leaders gather this month at the United Nations headquarters in New York.
Belgium Prime Minister Bart De Wever "wants to feed the terrorist crocodile before it devours Belgium," the office of the Israeli prime minister wrote on its official X account.
Israel would continue to defend itself, it said.
Netanyahu similarly hit out at Australian Prime Minister Anthony Albanese last month, also labelling him as "weak" after Australia announced it would recognise a Palestinian state and then barred an ultranationalist Israeli MP from the country.
The Palestinians have long sought a state in the Israel-occupied West Bank, East Jerusalem and in the Gaza Strip.
Israeli officials have rejected pledges to recognise a Palestinian state, saying it does not change the reality on the ground.
Netanyahu has said recognising a Palestinian state would serve as a reward for Hamas' October 7, 2023 attack on Israel, which triggered the Gaza Strip war.
Israel has faced mounting international pressure over the toll its military offensive has taken on the civilian population in the shattered Palestinian enclave.
The militant Hamas group reiterated on Wednesday that it was ready for a comprehensive Gaza Strip deal through which all Israeli hostages are released in exchange for the release of an agreed upon number of Palestinian prisoners.
The group's remarks come shortly after US President Donald Trump called on Hamas to release all 20 hostages.
The Israeli domestic intelligence service Shin Bet said on Wednesday that it has foiled a planned assassination attempt by a Hamas cell on National Security Minister Itamar Ben-Gvir.
In recent weeks, several Hamas militants from the Hebron region in the West Bank have been arrested, a Shin Bet statement said.
Drones were confiscated during their arrest, Shin Bet said.
According to the investigations, the suspects had planned to attach explosives to the drones to carry out the attack.
The ultranationalist minister had temporarily left Netanyahu's government in January in protest at the planned ceasefire in the Gaza Strip.
He has been associated with the radical part of the settler movement since his youth.
with DPA
