Mr. Chair, as with much of what occurs in Afghanistan, as I have already indicated, the commander on the ground made a judgment call based on available information. Very often information such as this is based on operational detail. For a variety of reasons, on occasions, if operational detail might in any way imperil troops on the ground, might in any way impinge on our operations or those of our allies, then that information is held closed.
In the House of Commons on May 27th, 2010. See this statement in context.