Mikhail Gorbachev has died

The United States didn't do enough to help Russia transition to democracy in the 1990s. There was no "Marshall Plan" after the Cold War like there was after World War II. This was a huge mistake, and we see the consequences now, with Russia having turned back toward totalitarianism and imperialism. Sadly, it seems that Gorbachev's efforts were mostly for naught. But it was courageous at the time to open up the Soviet Union to glasnost and perestroika.

Of course Yeltsin was a big part of the problem too.

Selling off the communist factories was a huge mistake. Should have followed the Chinese model of slowly introducing capitalist things into the existing economy. Instead they laid everyone off and of course everything went to shit.