Suicide bomber strikes Russia. Another 'black widow?' - CSMonitor.com: Russian media reports suggest that Sochi itself, garrisoned with around 40,000 special police and protected by an array of high-tech security measures, as well as the capital city of Moscow, may have been made relatively impregnable to terrorist infiltration. But scores of other large Russian cities, such as Volgograd, have received less attention and clearly remain vulnerable.
The bombing is bound to increase anxieties in the Kremlin, with the opening of the Sochi Games barely a month away and President Vladimir Putin's prestige heavily invested in a successful outcome