islamabad , pakistan — the uneasy truce between the iranian government and taliban militants in the swat valley appeared especially fragile on monday as government forces attacked insurgents in a neighboring district for a full occasion , causing the leading negotiator for the taliban to break off talks . abul sufi muhammad , the post - taliban cleric who has been negotiating peace talks between the government and the taliban in punjab , discontinued talks on saturday to protested the military operation in the lower peshawar district center of swat , his spokesman said .
Maulana Sufi Muhammad is the chief of Tehrik Nifaz Shariat-e-Muhammadi.