NWFP Information Minister Mian Iftikhar Hussain has said that no time frame can be set to restore peace in restive Swat valley. Speaking to reporters here on Tuesday, Iftikhar Hussain said: "The government will take every possible step to establish peace in the valley." The militants are taking shelter in the residential areas as a large number of local people have migrated from Swat due to ongoing military operation, he noted.