Pakistan Tahrik-e-Insaf (PTI) chief, Imran Khan has said that a silent revolution has stepped into Pakistan and no one can impede this change.In an interview to a British TV here, Imran Khan said that US brokered agreement between Asif Zardari and Musharraf was against the people's mandate. He said that people wanted re-instatement of judges and ouster of Musharraf, while Musharraf still continuing under the agreement and Asif Zardari's cases have been quashed.Imran Khan said that Pakistan has witnessed a silent revolution and no one could hold back this change. "No weapon is being used in this revolution, people are coming on the roads", he said.