US President Donald Trump said on Monday it should be mandatory for countries including Qatar, Pakistan, Egypt, Jordan and Turkey to join the Abraham Accords en masse as part of an effort to reach a deal with Iran.

Mr Trump said he spoke on Saturday to leaders of those countries, as well as Saudi Arabia and Bahrain, which already have signed the accords, a set of agreements to normalise relations with Israel.

"I stated that, after all the work done by the United States to try and pull this very complex puzzle together, it should be mandatory that all of these Countries, at a minimum, simultaneously, sign onto the Abraham Accords," the US President wrote in a Truth Social post on Monday.

He said those countries would be honoured to have Iran as part of the accords once a deal to end the war is reached.