The leaders of the frontline Naga separatist group, National Socialist Council of Nagaland (Isak-Muivah), NSCN (IM), today called on the Prime Minister Dr Manmohan Singh and the Home Minister Mr P Chidambaram in New Delhi.<br/><br/>After the meeting with Mr Chidambaram, Muviah told newsmen that they had a comprehensive discussion and the NSCN-IM will continue negotiation with the centre . The rebel leaders are set to hold with the government's new interlucutor R.S Pandey talks later today.<br/><br/>AIR correspondent Sarita Brara reports that NSCN (IM) wants greater Nagaland with the Naga dominated areas in the neighbouring states of Assam, Manipur and Arunachal Pradesh to be included in it. This is, however , opposed by these states.<br/><br/>The last round of peace talks between the government and the separatist group held in March 2009 in Zurich, Switzerland ended stalemate. The NSCN-IM had entered into a ceasefire accord with the Indian government in August 1997. They have held 67 rounds of talks with the government so far.<br/><br/>The rebel group's chairman Isak Chisi Swu and general secretary Thuingaleng Muivah arrived in New Delhi Saturday night from self-imposed exile in the Netherlands.<br/>