Kiev points finger at Russia after two killed in blast

KHARKIV, Ukraine (Reuters) - At least two people were killed on Sunday when a blast struck a crowd at a pro-Ukrainian rally far from eastern Ukraine's war zone, and Kiev said it had arrested suspects who had been armed and instructed in Russia.

Ukrainian authorities fear violence could spread from two rebellious provinces to other areas in the mainly Russian-speaking east, a swathe of territory which the Kremlin calls "New Russia".