The killing of my friend Boris Nemtsov must signal the death of appeasement

To stop Putin's aggression, it isn't necessary for the west to defeat the entire Russian army: just a strategy to make him look like a loser When the Russian opposition leader Boris Nemtsov was assassinated in sight of the Kremlin last Friday night, it shocked even those of us who thought we had lost the ability to be shocked by events in Vladimir Putin's Russia. When Russian forces moved into Ukraine and Putin annexed Crimea a year ago, it was also a terrible shock to a world that had grown too...