Others

That's a good question. I think, or at least I hope, we could give some short explanations regarding such concepts. For example, if we ask something about peacekeeping (which I don't think has much to do with Afghanistan, but say we mention it), maybe we could start with something like. "According to the X dictionary/whatever source, peacekeeping is defined as ... Given that definition, do you believe that ... ...?". As for NATO, I would just explain what it stands for, and/or maybe also shortly mentioned when it was created and for what main purpose, whatever info is relevant to the question we are asking.

Lee, I hope a short explanation is possible. We should set a limit to the word length though just because people often may lose interest if they have to read a long explanation section first.