The US should hold Israel to the same standards as other countries and end its decades-long ambiguity over Israel’s secretive nuclear capabilities, a group of 30 House Democrats has said.

The lawmakers signed a joint letter on Monday and sent it to Secretary of State Marco Rubio. “We are, in the fullest sense, fighting this war side by side with a country whose potential nuclear weapons program the United States government officially refuses to acknowledge,” they wrote.

They said that since American service personnel were deployed in the region, Congress had a constitutional responsibility “to be fully informed about the nuclear balance in the Middle East, the risk of escalation by any party to this conflict, and the administration's planning and contingencies for such scenarios”.

“We do not believe we have received that information,” the politicians said.

The letter was led by Congressman Joaquin Castro, and the signatories include Alexandria Ocasio-Cortez, Ro Khanna, Rashida Tlaib, Ilhan Omar and Pramila Jayapal.