"The gathering in Saudi Arabia was just a show with no practical or political value of any kind," Rouhani said at a press conference.

In a jibe at the billion-dollar deals signed between Trump and the Saudi government, Rouhani said: "You can't solve terrorism just by giving your people's money to a superpower."

He said Friday's election in Iran that saw Rouhani convincingly defeat hardline challenger Ebrahim Raisi had been a message to the world that Tehran was ready for engagement.

"We wanted to tell the world that on the basis of mutual respect and shared interests, we are to ready to have interaction," he said.