irob
The thought of putting one Canadian life at risk for trade is sickening. The least Canada should do is cut any military connection with the US. At least two good reasons.
1. The US wars have been immoral. The US attacks countries which are weak, from Vietnam to Afghanistan to Iraq, to Libya and now Syria (regime change).

2. The US always loses. 

What purpose is served by Canada joining in US military activities? 

The purpose of the CAF is to defend Canada. Nothing to do with our current activities in the Middle East area.

Let trade take care of itself. The US has not been trading with Canada for the good of Canada. It is for the good of the US. In any event trade should not be a consideration in military activities. 

I agree with Ward that DND 's  current role is a menace to Canada. It invites retaliation.