U.S. President Barack Obama failed to meet with the expectations of the global community, Iranian President Mahmoud Ahmadinejad has said in an interview with the U.K. Channel 4.

"We hope he will succeed in making changes, real changes. And we have helped him. However we are concerned about his avenues - he has failed to meet the expectations of the people in the U.S. and the people of the world," the Iranian leader said.

He also mocked Obama''s speech early this year in which he said "if countries like Iran are willing to unclench their fists, they will find an extended hand from us."

"Which hand did he extend? His right hand or left hand?" Ahmadinejad asked.

He said that it was in fact the Iranian leadership who "extended hands."

"I sent a message to him and we participated in Geneva negotiations. We talked with them and we offered the proposals for a fuel exchange. And we have announced that we stand ready to have a debate in New York. Who has extended his hand in practice? He extended the sanctions against us."