President George W. Bush called John a “Qaeda fighter.” Defense Secretary Donald H. Rumsfeld said, inaccurately, that he had been captured “with an AK-47.” Attorney General John Ashcroft said John had “turned his back on our country and our values.” Mayor Rudolph W. Giuliani suggested that John be put to death for treason; polls showed that many Americans agreed.

This was heartbreaking to me and John’s mother. The son we know is intelligent, spiritual and good-natured. He has a wry sense of humor. He is fluent in Arabic, and curious about the history of the world’s languages and cultures.

John was not running away from anything when he first went overseas. He had a passionate desire to embrace all aspects of Islam, including the Arabic language. He embarked on an unusual odyssey of learning and adventure with full support from his parents. He selected Yemen, where he traveled in 1998, at age 17, because it was one of the best places to learn classical Arabic.

In November 2000, John left Yemen for Pakistan, and the next April, he wrote to me and his mother to say he was going into the mountains of Pakistan for the summer. That was the last we heard from him. Throughout the summer, and especially after 9/11, our family became increasingly worried about John’s whereabouts and his welfare. In December 2001 we were shocked to learn from the news that John had been found among a group of Taliban prisoners who had survived an uprising and massacre at an old fortress near Mazar-i-Sharif.

Like Ernest Hemingway during the Spanish Civil War, John had volunteered for the army of a foreign government battling an insurgency. He thought he could help protect Afghan civilians against brutal attacks by the Northern Alliance warlords seeking to overthrow the Taliban government. His decision was rash and blindly idealistic, but not sinister or traitorous. He was 20 years old.