It's worth noting that many of the countries that we've bombed the shit out of, or violently overthrown their government, or generally just fucked with weren't exactly major players on the global stage. Guatemala, the Dominian Republic, Haiti, Peru, Loas, Lebanon, Libya, Panama, etc.
Our idea of what qualifies as a "national security threat" is a little skewed, to say the least. This was never better illustrated than in 1961, when President Kennedy asked Mexico to go along with the United States in saying that Cuba was a treat. The Mexican dipomat explained, "if we publicly declare that Cuba is a threat to our security, 40 million Mexicans will die laughing."
And so that is our history. Bombing nations that Americans can't pronounce or find on a map. However, there are always threats to "the grand arena". In fact, the tiniest most impoverished nations pose the biggest threat.
Why? Well, first you gotta understand what Empire is. It is taking the resources of others without just compensation. People tend to get pissed off about that. That's why strong arm dictators come in handy. They're cheaper to bribe than entire populations.
So, say if Grenada, or some other puny shit hole nation can break away from economic and political enslavement, then why can't any other nation do the same with the better resources?
Thus the Rotten Apple Theory, also sold to the American public as the Domino Theory. And it's a theory that seems to be coming to pass.
Let's face it, America's power is declining. Our own backyard, Central and South America has gone from being run by US puppets (usually military dictators), to a real democratic revolution, with plenty of socialism thrown in to boot. That doesn't make the Fascist Wanna-Bes in this country very happy. Sadly, their own policies have made us too weak to do anything about it.
After wasting what will likely become 4 trillion in Iraq, our power is slipping in the Arab world too. And as a result, the entire Arab world is now transitioning to a new democratic paradigm.
The EU already has a bigger economy than ours, and China will soon be bigger than both ours and the EU. The American Century is over. And for the vast majority of the people on this planet, that's a good thing.
That's most unfortunate, because that didn't have to be the case. If we lived up to our propaganda as the model for freedom and democracy in the world, 9/11 would not have happened, and we would still be on top. Sadly, this country has one fatal flaw. We let the wealthiest among us make all the important decisions, and those 600 or so families are fucking insane.