Moscow: A Self Delete bombing at a railroad station in central Russia killed at least 15 people Sunday, according to official accounts, raising the specter of a new wave of terrorism before the Winter Olympics in Sochi. More than two dozen were wounded, some of them critically, meaning the death toll could still rise.
Doku Umarov, the Chechen rebel fighter who now leads a terrorist group known as the Caucasus Emirate, vowed in July to target Sochi explicitly, calling the games "satanic.""They plan to hold the Olympics on the bones of our ancestors, on the bones of many, many dead Muslims, buried on the territory of our land on the Black Sea," Mr Umarov said in a video statement.
It was the second such attack in Volgograd in two months. In October a woman identified as Naida Asiyalova detonated a vest of explosives aboard a bus in the city, killing herself and six others.
In that case, the authorities linked her by marriage to an explosives expert working with an Islamic rebel group in Dagestan, the southern republic where the police have struggle to suppress an insurgency by Muslim separatists. A month later the authorities announced that they had killed her husband and four others in a raid in the region.
tl;dr
the bomber is thought to have been a woman working for the caucasus emirate known as a "black widow" -- a female Self Delete bomber who targets civilians to avenge dead family
caucasus emirate had conducted a black widow bombing earlier in the month in volgograd on a bus in protest of the olympics being held in sochi
the prevalence of the attacks seems to only be getting worse since this bomb is much more powerful than the one used on the bus
the train station saw the most powerful explosive detonated in the city since the battle in 1942
