Three Russian soldiers were killed and over 30 officials were wounded yesterday when a suicide bomber drove a car rigged to explode into military installation in Dagestan, a Muslim region of Southern Russia. Although no group has taken responsibility for the attack, Sunday's events underscore the increasing strength of an insurgency movement in the region. Over the last two decades, Russia has fought two civil wars against Islamic separatists in the neighboring Caucasus Mountains region of Chechnya. Yet as violence in Chechnya has drawn down, Dagestan has become increasingly unstable. The region made headlines earlier this year when an attack on Moscow's subway system was credited to two female bombers from Dagestan. For the latest, we speak with New York Times Moscow Bureau Chief Clifford Levy from Moscow.