It's difficult (in a face-palm kind of way) to listen to people, even well-informed educated people and 'experts', opine on global politics when they are clearly ignorant of (or studiously ignore) this most important fact. There is no 'democracy' in this world, and there has not been for, oh... forever. Western populations are so damn dumbed down and dissociated that they actually can't figure out that nothing of any significance changes with a change of government, despite all the evidence before them. In fact, it's worse than that, things do change, but for the worse from the point of view of the average citizen. Who will argue that Western warmongering and the divide between rich and poor has increased dramatically over the past 40 years? How many administrations does that period comprise, about 10? Democrat, Republican, Democrat, Republican... Whoopee frickin' doo. In the UK, it's Conservative, Labour, Conservative, Labour... In both countries, the supposedly 'bleeding-heart lefty' Democrat and Labour governments fronted by Tony Blair and then Obama actually out-warmongered their supposedly traditionally uber-warmongering opposition parties.
How do you explain that? Easy. There is no difference between them because neither of them, as parties or Presidents or Prime Ministers, actually control anything of any significance. Someone else does.