During the Sandinista reign in Nicaragua in the mid-1980s, almost every terrorist group in the world had an office there, including the PLO, the ETA, and the IRA. Anyone counseling that terrorist groups should not be lumped together would have a hard time explaining their presence. They were, in fact, components of the Soviet foreign legion brought together by their common antipathy for the United States.
Former Special Assistant to President Ronald Reagan
in The Atlantic Monthly, Dec. 2006
Uh, I'm not so sure that the IRA and ETA were antipathetic to the US. As a matter of fact, anecdotal evidence suggests that the IRA was an instance of city-sponsored terrorism - specifically, Boston and New York. Which are in the US.