In this picture taken on June 22

In this picture taken on June 22, 2009, a Pakistani Frontier Constabulary soldier stands alert at a checkpost in Tanai village near Wana, the main town of South Waziristan. The residents of South Waziristan say troops are massing on their doorstep, food is in short supply, and tens of thousands of civilians are already on the move. Military and government officials have vowed a full-scale operation into the semi-autonomous, fiercely independent tribal belt along the Afghan border to hunt down Pakistani Taliban commander Baitullah Mehsud and his fighters. AFP PHOTO/ROSHAN KHAN PAKISTAN-UNREST-NORTHWEST