A former advisor to Russian President Vladimir Putin threatened nuclear war at the very beginning of a radio interview on Wednesday. Sergei Markov appeared on the BBC's Today program after Putin ordered a partial mobilization of his military, which would call up an estimated 300,000 reservists to fight in Ukraine. Putin, in a televised address that aired on Wednesday morning, also accused the West of engaging in nuclear blackmail, and warned that "if Russia feels its territorial integrity is threatened, we will use all defense methods at our disposal, and this is not a bluff." Markov hadn't even been asked...