What's happening in Gaza is not genocide: Biden

US President Joe Biden strongly defended Israel on Monday, saying Israeli forces are not committing genocide in their military campaign against Hamas militants in Gaza in a rejection of criticism from pro-Palestinian protesters.

"What's happening in Gaza is not genocide. We reject that," Biden said at a Jewish American Heritage Month event at the White House.

Biden has faced protests at many of his events around the country from pro-Palestinian advocates who have labelled him "Genocide Joe" for his steadfast support for Israel.

In remarks at the White House event, Biden stressed his belief that Israel was the victim dating back to the Oct 7 attack on southern Israel by Hamas militants who killed 1,200 people and took hundreds of hostages.

He said US support for the safety and security of Israelis is "ironclad."

Biden also rejected the International Criminal Court's prosecutor for saying he had requested arrest warrants for Israeli Prime Minister Benjamin Netanyahu and his defence chief over alleged war crimes.

The ICC prosecutor on Monday also said he requested arrest warrants for Hamas chief Sinwar and two other Hamas leaders.