Forced out: After the U.S.-led toppling of the Taliban in Afghanistan, many Taliban and al Qaeda extremists fled for safe haven in Pakistan's northwest tribal belt. For the past two years, Pakistani security forces have engaged in bitter fighting to rid the area of Islamist militants. In the process, though, innocent civilians have paid the price. At least 450,000 people have been forced to flee their homes, often ending up in camps. Above, Pakistanis escaping conflict in the northwest Bajaur area carry relief goods at the Kacha Gari refugee camp near Peshawar on Dec. 7, 2008.