Even in the Cold War, it was horrifically uneven. We were cozy with Yugoslavia and intermittently cooperative with the Arab socialist states (and Israel, which was dominated by the at-the-time-actually-left Labour coalitions), but couped the democratic governments of Mossadegh in Iran (who wasn't even a socialist) and Allende in Chile for seeming a little too 'red'.
Diving into Cold War history, you realize how much of the lines sold about realpolitik, liberal internationalism, and material conditions are all less important than their defenders present them as.
No one has a plan. There's no rationality or structure to it. Personal quirks of low-ranking bureaucrats and cultural perceptions of political decorum are often as important as national-scale economic concerns.
It's why democratic participation and awareness of foreign affairs is so goddamn important. Because otherwise, Mr. Empty Suit in a sinecure position during an unforeseen crisis who had a fucking cold the day a meeting was supposed to happen determines the fate of hundreds of thousands.