And let's not forget the FARC. The Colombian people don't seem to be in any hurry to vote themselves a communist regime. Not being an expert in such matters, I can't give you an exact amount of force would be necessary to root the rebels out of their mountain camps, but I'm sure it's finite, and well within the resources of any one of several powers in the Americas.
but what would the consequences of this be? Would the elimination of the FARC mean an end to a socialist counterforce in Colombia - or simply result in a mutation?
This kind of thinking is at the root of a lot of drawn out wars: we see it in Pakistan, Afghanistan, Israel, Chechnya and on and on down the line. If only we could "eliminate" the Taliban/Chechens/FARC/Vietnames Commies, then we'd have everything fixed!
What supports all of these guerilla/resistance movements though are the people of the country. For every fighter there are 10 non-fighters in ideological and social alignment.
In my opinion, I have not seen ANY example of where a swamp was successfully "drained".
I've seen cases where after years of extreme brutality the forces have been temporarily bullied into submission (Chechnya) but most governments don't have the will, political capital or the capacity to effect that kind of evil in order to achieve their end.
So what we're left with are never-ending conflicts while the dominant power pursues its fantasy of completely eliminating its opponent - not realizing that the very pursuit of such a policy ensures its continued failure.
Even the "success" of Russia in chechnya is a mirage: the region is still ripe for resistance even if it has been pummelled into temporary submission.
The blood spilt will echoe down the generations until once again Russia will be forced to either: put them down brutally again, or come to some kind of political recognition of their opponents that involves power-sharing and some degree of autonomy. Recall the years when FARC had a safe-haven: violence levels were at an all time low.
Remove the safe-haven and pursue a policy of elimination and you end up making things worse for everyone.