The issue focused on this week's edition of the BBC World Service's Urdu Service on Tuesday. President Karzai has declared that any Afghan officer killed on duty would be regarded as an enemy combatant.But what exactly does this mean in practice?On paper, it means that anyone killed on duty would have been guilty of desertion and taken prisoner.But there are serious doubts about whether this would actually happen. While most Taliban commanders were killed by British forces in 2003, most still refused to leave their bases and