Twin blasts at metro rail stations in Moscow during rush hour on Monday have claimed at least 35 lives.

Russian authorities allege that suicide bombers from the the North Caucasus region, which includes Chechnya where Russian troops have fought two wars with separatists, were responsible for the attack.

Tarek Bazley reports on how fighters in the Muslim-majority region have been blamed for previous attacks on Russian targets.

[March 29, 2010]