To give two examples relating to China and India here was a thread very recently that mentioned how the Mexican cartels are making inroads in the US, succesfully corrupting some police union and that cartel was also in cahoots with the chinese as thats where they were sourcing their fentanyl from.
There is also the Indian Brahmin conspiracy where they favor each other over other castes even abroad.
Both of these are real and established. But it's also clear that neither of them are all-powerful.