The US president-elect has said the United Nations is failing to live up to its potential, heaping further criticism on the body in the wake of a UN vote on the legality of Israeli settlements.
Donald Trump's comments follow Secretary of State John Kerry's speech defending the US decision to abstain from that vote.
"There is such tremendous potential, but [the UN] is not living up [to it]. When do you see the United Nations solving problems? They don't. They cause problems," Mr Trump said.
Trump offered little comment on Kerry's speech, telling reporters that it "spoke for itself", but he has assured Israel that it merely needs to "hang on" until his administration takes over from that of Barack Obama.
Downing Street said it was "not appropriate" for John Kerry to brand the Netanyahu administration as the "most right wing in history".
The Israeli prime minister said the country would stop funding for a number of UN bodies deemed as 'hostile' to Israel.