And if you select Gorbachev, I'd ask for a reason other than "he listened to Reagan and tore down that wall." It's not required, but encouraged.
Glasnost & Perestroika were nice too.
Perestroika was actually an example of monumental incompetence, like a lot of what Gorby did. If he had followed the Chinese Model established by people like Deng, we'd still be talking about the Evil Empire. Of course that means we are probably very lucky he screwed up.
The writing had been on the wall for the Soviet Union for decades before Gorbachev took power.No doubt, they were dependent on aid after all. However, it's very obvious that what Mikhail did was nowhere near what he set out to do.
Perhaps. I suppose we could have wound up with nukes winding up with renegade groups or full scale civil war.