Saudi Arabia is known to finance Wahhabism groups around the world, its books for children say it is ok to kill non-Muslims and even Muslims of the “wrong kind”, the terorist behind 9/1/1 were from the country, ISIS got its money from SA and the country is engaged in mayor war in the Middle East. Yet SA is a friend of US and many western countries.
So does imposing sanctions have any consistent basis or framework in the U.S? I believe that is very relevant here, because if not, it's basically being a bully.
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.
