In the latest violence in Pakistan's tribal belt along the Afghan border, up to 25 Pakistani soldiers and some 125 militants have been killed in a new counterjihadist offensive. Pakistani ground and air forces for the past week have sought to dislodge Taliban fighters from key heights in the Tirah Valley in Khyber-Pakhtunkhwa province, one of the seven districts that make up the country's Federally Administered Tribal Areas. This represents the biggest offensive in the region over the past two years against fighters from Pakistan's main Taliban rebel grouping, the Tehrik-i-Taliban Pakistan, and their allies from Laskhar-e-Islam, a local Taliban grouping. Taliban Activity in Afghanistan and Pakistan Islamabad launched a major counterjihadist offensive nearly four years ago to try to regain control of its northwest, a region that since the U.S. invasion of Afghanistan increasingly has fallen under the control of Pakistani Taliban rebels aligned with al Qaeda.