Using social engineering to fuck with your life is also much harder and more expensive when their hardcore supporters don't even speak the same language you do and they don't have support from the authorities to force you to do anything. They can't threaten to arrest you the same way an agent working for the US could.
The US on the other hand will get to you regardless of where you are in the world. They will go as far as killing state leaders and journalists overseas. Even as a US citizen living in the US, they literally passed laws under Obama that allows the US government to drone strike US citizens for national security reasons without a trial.