Filmmaker Ami Horowitz has criticised Joe Biden's “massive mistake and miscalculation” on Israel after he “flipped” on his morals for political expediency.

US President Joe Biden has urged Israel not to go ahead with such an operation over fears it would exacerbate the humanitarian catastrophe in the Palestinian enclave.

Last week, Biden said the United States would not provide offensive weapons for a Rafah invasion, raising pressure on Israeli Prime Minister Benjamin Netanyahu.

“Never mind the moral issue involved with not taking a stand to stand with Israel. Just from a political perspective, it was a massive, massive mistake and miscalculation,” Mr Horowitz told Sky News host James Morrow.

“Initially, he [Biden] said I’m going to stand with Israel … but when he came to realise that the margin of error is so small when it comes to Michigan and Georgia and Minnesota, I better flip on my morals for political expediency.

“It was a massive mistake politically because these people are already aligned against Biden.”