国际英语新闻：Russia to establish emergency center in North Caucasus

On Monday, two female suicide bombers killed 40 in attacks on the Moscow subway system, which the authorities have linked to militants from the North Caucasus. Two days later, twin suicide bombings rocked the restive North Caucasus republic of Dagestan, killing 12 people.

The female suicide bomber who detonated herself at Moscow's downtown Cultural Park metro station has been identified as a resident of Dagestan.

Russia's North Caucasus republics, particularly Chechnya, Dagestan and Ingushetia, have been plagued by violence, particularly against law enforcement officers, which local rebels see as representing the Russian authorities.