The majority of dictatorships on planet earth — by the U.S. government’s designation of which countries are dictatorships — are sold U.S. weapons. And most of their militaries are trained by the U.S. military.
If I had to pick a dictatorship to object to the U.S. government’s position on, it would be one of these many, and probably it would be Saudi Arabia. But, then, I’m not a Progressive Senator. If I were, then I would