The latest battle between Kurdish forces and Islamic State militants was captured by a crew from Norwegian television. It was a fierce fight, but the militants were eventually expelled from the town of Makhmur, 40 miles southwest of Arbil' The regional capital under threat from the militant advance. It was a small victory in a much larger war. The Islamic State has driven thousands from their homes, threatening to murder ethnic minorities. Scores of Yazidis have already fallen victim.