It is not Trump's test (America has more than carried its share of the global burden over the decades): it is Canada's test. Canada is in the region with troops and fighter aircraft: will Canada have the nuts to actually put some firepower where it normally puts hand-wringing liberal piety and wind? 

Trudeau was actively building up the Canadian Armed Forces for action in Ukraine and Estonia and for missions in Africa. Can he divert these resoruces to taking out Assad? Will Canadians stand up and have a military draft so that we have the force multiplier available to occupy Syria and re-build it? Or is Canada only about giving Syrians welfare payments and free trips to Canada?