Tibet was annexed 1950-1951, in the same time period as the Korean War and just before the Vietnam War, both of which were wars aimed at restricting the flow of communism. It's probably comparing apples to oranges given that Korea and Vietnam were more focused at stemming the spread of communism as an ideology, but China's invasion was an expansion of communism in a more literal, imperial way. How come the West didn't go to war over this? Given Tibet was a very traditional, insular society, was it considered less strategically important for the West to fight for? Or was it a watershed for action being taken in Korea and Vietnam?