"We got a president who is tough, who does not listen to the people who are naysayers, and a president who is as committed to regime change as we are," former New York City Mayor Rudy Giuliani – US President Donald Trump's personal friend and a long-time supporter – said in a speech to the Iran Freedom Convention for Democracy and Human Rights in Washington.

The first order of business in bringing about regime change in Iran would be to tear up the 2015 nuclear deal, which Trump is set to either reject or approve before the May 12 deadline. Giuliani, who is not part of the government, believes the president will tear up the agreement – despite the insistence of European allies to preserve the milestone accord – and Trump's so-called "war" cabinet will help him do the job.

"With Secretary of State Pompeo now on his right hand and his national security advisor John Bolton… on his left side, what do you think is going to happen to that agreement, that nuclear agreement?" Giuliani asked, smiling and indicating to the crowd that Trump will simply rip it up and spit on it.