Regional Governments Seen Struggling to Control IS-Khorasan

Washington - Last week's concert hall massacre in Russia demonstrates not only the capacity of Islamic State-Khorasan to stage complex attacks beyond its base in South-Central Asia, but also the inability of the Taliban and regional countries to counter its threats, experts say.

The Islamic State group claimed the attack on a music venue near Moscow Friday that killed 143 people and wounded more than 180. Althoug