Still don't think it is the right word but...
I think the term you are looking for is (gasp) NeoImperialism. (I think Neo is way over used and mostly out of context)
http://en.wikipedia.org/wiki/Neocolonialism
The list of practioners of this concept are long and distinguished.
So would you say that when a foreign group comes into a country and tries to change its government to one that is favorable to their aims and interests it is Imperialism?
Doesn't that describe what the islamists are doing as well? Not to mention the Soviets and Cubans in the middle east, Asia, Africa and South America in the 70s and 80s? I don't see America as being the only one doing this. By this defintion Chavez is undermining the Governments of all his neighbors and trying to create an empire of his own. What is the difference between revolution aided or sponsored by a sympathetic foreign government and imperialism?