Former President Donald Trump has criticized the Biden administration for allowing Russia and China to negotiate on behalf of the United States to revive the 2015 Iran deal.

Addressing a crowd of his supporters in Washington Township, Michigan, on Saturday, Trump said Biden is not even reviewing the new nuclear deal and has let Russia and China to lead the Vienna talks, calling it “stupid”.

"So, we have Russia negotiating the deal – with China as a backup – how stupid is this country. They are so stupid”, he said, adding that “the deal is turning out to be a disaster. Nobody can even believe it. But we're giving everything away – all the things that we fought for with Iran."

Trump, who in 2018 withdrew from the Obama-era deal -- officially known as the Joint Comprehensive Plan of Action (JCPOA) -- and imposed ‘maximum pressure’ sanctions, added that his administration would have made a new agreement. "Within one week after we took office, they would have made a deal. They were so ready to make a deal."

He slammed Biden’s policy toward Iran, saying, “We had all the cards. We still have cards – if they knew how to play them, they still have cards”.

Most of the Republicans and former administration officials denounce Biden’s policies regarding the Middle East and particularly Iran, however, Biden’s administration says Trump’s decision to abandon the JCPOA led Iran to intensify its nuclear program and aggressive actions in the region.