SAN JUAN, Puerto Rico - Abdul Hakim Bukhary was once ready to kill U.S. troops in Afghanistan. But the former holy warrior has told his American captors he now loves democracy — and that hardline Taliban fighters prompted his conversion. Bukhary traveled from his native Saudi Arabia to Afghanistan in 2001 after the Taliban, who ruled Afghanistan using a strict interpretation of the Quran, called for a jihad against American soldiers. The U.S. troops were set to invade in response to the Sept. 11 terrorist attacks in the United States. Bukhary told his tribunal at Guantanamo Bay that he had...