I call upon your Editor in Chief to personally contact Al Jazeera and do an interview with them, explaining in detail how and why this reporting mistake was made, and apologizing for your magazine's lack of zeal in its search for truth. Afghanis will probably not believe the U.S. government when it denies (however correctly) that no such incident happened. However, if YOUR MAGAZINE makes it crystal-clear directly to the Afghan people that the report was a grievous mistake, the situation may still be salvaged.
They should agree to turn over the "anonymous source" who made up the lie. Why is he being protected?