Col. Sam Gardiner notes, in an interview with Amy Goodman on Democracy Now, Russia has deployed tactical nuclear weapons to South Ossetia. The SS-21 Missile launchers are relatively weak compared to bombs that have already been used against Georgia by the Russian air force. However, this move does indicate Russia is potentially upping the game from a conventional weapons war to a tactical nuclear weapons war. Gardiner notes that at a news conference on Sunday, the US Deputy National Security advisor has noted these weapons arriving in South Ossetia.
Business Wire confirms the subject matter of the news briefing in Beijing. Link