Communism

"Advancing the revolution" of course being a shorthand for "spending all resources on exporting it like Trotsky wanted, only to end up failing externally and internally" rather than building up production so that it could actually afford to support revolution around the world, which it did in cases like Cuba, Palestine, Algeria, and more.

The dissolution of the Soviet Union was a complicated factor, but it was by no means because they chose to develop, rather than get themselves wiped out immediately like Trotsky wanted. There are many Socialist nations today, the PRC is by far the biggest and most relevant example on the global stage, it isn't just Cuba.