After the spectacular attack: who are the Russian military bloggers and are they a threat to Putin?

The man killed in a bomb attack in St. Petersburg was one of more than 500 military bloggers in Russia. Who are those people anyway? Why is it that they are allowed to mercilessly criticize the Russian army and usually get away with it? Why isn’t Vladimir Putin cracking down on them? Russia analyst Joris Van Bladel explains.

ttn-3