KABOBAYAN CAMP, Pakistan – Hukam Khan isn’t sure how old he is, but his beard is long and white, and when he came to Pakistan 40 years ago fleeing an earlier war in Afghanistan, his children were small, stuffed onto the backs of donkeys and dragged across rugged mountains to the safety of northwestern Pakistan. Back then the war was against the former Soviet Union and Khan was among more than 5 million Afghans forced to become refugees in Pakistan, driven from their homes by a bombing campaign so brutal it was referred to as a “scorched earth” policy. After four decades of war and conflict, more than 1.5 million Afghans still live as refugees in Pakistan, feeling abandoned by their own government, increasingly unwelcome in their reluctant host country and ignored by the United Nations. Now, for the first time in years, there’s a faint possibility they might eventually return home.