What Jack said....

You do the job with the tools you're given, but just because there's more help coming DOESN'T mean the Canadians failed doing the job they did with what they had at hand.

Or is this more of the "Canada should just leave because we say it's not working" meme?

As Jack Mitchell said, how has Canada "failed"? You do what you can with the resources at hand the best way you can - having more boots on the ground means more can be done overall, not that something didn't work and more will fix.