Why aren't they?

Today's Globe and Mail featured an article calling for the resignation of Canada's Defense Minister, Gordon O'Connor, over allegations that Canadian prisoners in Afghanistan that are handed over to Afghan authorities are subsequently tortured.

One thing I noticed when reading the article: the detainee transfer agreements signed by Britain and the Netherlands give these countries permission to check on the welfare of the prisoners they have transferred. The agreement signed by Canada apparently does not. And I'm wondering: why not? Why aren't the Canadians allowed?

The article goes on to point out that international law makes it illegal to facilitate torture in any way - which is something that the United States government might need to remember, too.