From a March 15 Facebook post by Michael McFaul, former U.S. ambassador to Russia, who left his position last month:
I am very depressed today. For those of us, Russians and Americans alike, who have believed in the possibility of a strong, prosperous, democratic Russia fully integrated into the international system and as a close partner of the U.S., Putin's recent decisions represent a giant step backwards. Tragically, we are entering a new period with some important differences, but many similarities to the Cold War. The ideological struggle between autocracy and democracy is resurgent. Protection of European countries from Russian aggression is paramount again. Shoring up vulnerable states, including first and foremost Ukraine, must become a top priority again for the US and Europe. And doing business with Russian companies will once again become politicized. Most tragically, in [the West's] seeking to isolate the Russian regime, many Russians with no connection to the government will also suffer the effects of isolation. My only hope is that this dark period will not last as long as the last Cold War.