Over the years, Russia's southern republic of Dagestan, located in the North Caucasus region, has been beset by extremist violence. This weekend, there was more bloodshed.
Officials say five gunmen in the regional capital of Makhachkala and the city of Derbent opened fire at Orthodox churches and two synagogues, as well as a police post, killing at least 20 people before being slain by authorities.
