It's a fundamentally stupid idea really, whether you look at the Bush/Rumsfeld, Obama, or McCain variants of it. Democracies are just as capable (Maybe even more capable) of making terrible and/or catastrophic decisions as any oligarchy or dictatorship. History offers no support for it whatsoever, going back to the disastrous but democratically-decided ouster of Alcibiades by the Athenians in the Peloponnesian War. Populist democracratic reforms in France in the 19th Century, and Germany in the 20th, led each into successions of disastrous wars, with and without detours through dictatorships or empire when the democracies failed to deliver even minimally-efficient government.
Each of the powers in this story sees that it is the dominant economic force in its own region, and using and preserving that advantage is naturally far more important to them than proselytizing democracy. Our political leadership across both parties is afflicted with a depressing inability to see that the rest of the world is not the USA, and really the fault is not a recent one, it goes back to at least the Wilson Presidency, and it's embedded in the academia that schools our so-called 'Best and brightest.' The decision to try foreign terrorists in civilian criminal courts for acts of war, after capturing them in military operations overseas, is just another symptom of this lofty yet simplistically stupid viewpoint.