The USSR have been a pretty big problem, causing the Red Scare (promotion of widespread fear by a society or state about a potential rise of communism) and all.
Yeah man, I totally agree.
In fact, the USSR and the United States are deep in the Cold War (The Cold War was a period of geopolitical tension between the Soviet Union with its satellite states, and the United States with its allies after World War II) right now, with McCarthyism (accusing people for being a commie) playing a pretty big part in it. Stalin (the leader of the USSR), being the reason for it.
Oh, its more than neat, because the U.S. is doing all it can to suppress communism through containment (the process of keeping communism confined into one area), and there is an Iron Curtain in Europe representing the boundary of communism and democracy.
Wow! Like, an actual, physical iron curtain?
Ahh, no. A Metaphorical one. However, there were tactics of brinkmanship (the art or practice of pursuing a dangerous policy to the limits of safety before stopping, especially in politics) in the cold war, as both the USA and the USSR were frantically building as many hydrogen bombs (nukes) as possible.
Geez, that coulda been bad.
Indeed, it could have been REALLY bad, had people decided to launch those bombs. But, luckily they didn't, and no massive retaliation (attacking back harder than you were originally attacked) occurred.
Did anything out of this world happen?
Well, technically yes. There was the Space Race (The race between the USSR and the US to see who could get to the moon first), so I suppose that that counts.