The east broke itself, really, but the west certainly did help break it with things like the Iranian coup d'etat.
The middle east killed itself in the Cold War. Both the USSR and the US offered it help. They wanted "neither east nor west." Africa was unable to receive help in a few of its USSR alliances.
The far east is still alive, but it isn't a very good place to live, even with economic superpowers like China. China could afford to be very Imperialist, if they wanted to, but they wouldn't want to anger their western trade partner. They aren't self-sufficient like the USSR was. They rely on trade and would have no hope starting a war (and winning it) because of it. A failure of Stalinism, just like North Korea.
Now the west is slowly killing itself, but instead of killing itself with oppressive dictatorships, with no will to trade, with too much trade, or with too little cooperation and causing too much strife, it's killing itself with two-cent fines, with over enforcing of lawsuits and court matters, by injecting money into itself with printer's ink and having it only decrease in value and reduce their economy, because it all only goes to a few people (CEOs of today make 200x their employees on average, when in the 1950s it was only 20x.) The military of the United States might be second only to China's, but if you can't afford to support it, it becomes a loose arm.
None of this is permanent though. World has always slowly fell and rebuilt itself.