By: Addison Wylie It’s tricky to review The Ambassador, because no matter how many flaws I name, it’ll all seem like small potatoes for Danish journalist/filmmaker Mads Brügger. The doc follows Brügger as he pulls off an enormous and dangerous undercover endeavour – to pose as a Liberian diplomat in order to get his hands on blood diamonds from mines with illegal protocols. The documentary has an unbelievably risky premise and a compelling trailer, but…