Almost every day in the Russian republic of Dagestan there are reports of Islamist insurgents assassinating police officers and local officials. And there are regular clashes between extremists and the security forces across the republic. It's causing Moscow deep concern and they blame 'outside forces' for orchestrating the violence; but human rights groups say it's a combination of poverty and police brutality which is fuelling the insurgency. For Assignment Steve Rosenberg reports from Dagestan.