Islamabad- Pakistan Tehrik-e-Insaaf (PTI) Chief Imran Khan has said that initial talks between TTP and the government committees had been successful . Talking to journalists in Islamabad on Thursday he said the negotiations have made a clear distinction which Taliban groups desire peace and which do not. He expressed the hope that the talks process would succeed. To a question, Imran Khan said extension in ceasefire is imperative to achieve lasting peace.