This gives an incentive for countries to become more free and like us and punishes nations not like us. The UK and EU would be like in the 90s percentile of free trade, Russia and India would be in the 80s to 70s, etc.
A genuine republic where the caste system still plays a significant role in motivating those who manage to rise far enough to keep their toes slightly above the snapping jaws of those who'd gladly climb up and replace them.
That's a self-evident fact which made them yuuugely motivated H1B Useful Idiots in the context of the technological Empower(tm)ment that facilitated the sub-prime rape of America.
The answer is very simple. Long before communists occupy the city, there was extensive network of informers; local Vietnamese citizens who knew absolutely everything about people who are instrumental in public opinion - including Barbers and Taxi Drivers. Everyone who was sympathetic to United States was executed. Same thing was done under the guidance of the Soviet Embassy in Hanoi, and same thing I was doing in New Delhi. To my horror, I discovered that in the files were people who were doomed to execution. There were names of pro-Soviet Journalists, with whom I was personally friendly.