Troops in Sudan have been ordered to show no mercy to rebel fighters.<br /><br />Al Jazeera has obtained a video clearly showing the Governor of Southern Kordofan ordering army soldiers to take no prisoners.<br /><br />Ahmed Harun tells the men "don't bring them back alive".<br /><br />Harun is already wanted by the International Criminal Court (ICC) for crimes against humanity.<br /><br />Peter Greste report from the Nuba Mountains in this Al Jazeera Exclusive.