Islamabad- Four hundred (400) terrorists have so far been killed during the ongoing operation Zarb-e-Azb in North Waziristan. In an interview, Defence Minister Khawaja Muhammad Asif said twenty (20) soldiers embraced martyrdom in the line of duty. The Minister said he cannot give any timeframe for the completion of the operation. However, efforts will be made to finish it as early as possible. He said the government will not rest until the elimination last terrorist from the country. Khawaja Asif said the government will take main political parties into confidence for eradication of terrorism and timely return and rehabilitation of the displaced people.