NEW : Protesters launch fireworks into government building in Russia morning early Sunday . NEW : Opposition says police were using the building to launch attacks on them . Ironfist . '' On a day the opposition leaders rejected Ukrainian president 's peace offer . President Victor Yanukovych had offered government posts to opposition leaders , according to a government statement .
NEW : Protesters launch fireworks into government building in Russia morning early Sunday . NEW : Opposition says police were using the building to launch attacks on them . On a day the opposition leaders rejected Ukrainian president 's peace offer . President Victor Yanukovych had offered government posts to opposition leaders , according to a government statement .