The U.S. has a history of regime change and subversive actions in every country that does not completely open its markets to it. Whatever you want to call it, it often punishes such countries by imposing sanctions, backing coups etc. because as the world's sole superpower it knows it can do so.

When a significantly more dominant part uses the power it knows it has over other parties to try to get its way, it is indeed buying, or any other synonym describing the same principle you may want to use.

Attempting to impose much greater intricacies to every single issue is rarely the right call.