"Air attacks against fugitive Islamists in south Somalia in recent days have mistakenly targeted nomadic herdsmen gathering round fires, killing 70, British-based aid agency Oxfam said on Friday. "Under international law, there is a duty to distinguish between military and civilian targets," Oxfam added, citing its local partner organisations in Somalia for the information. Washington sent a warplane into Somalia on Monday to try and take out what U.S. officials say are top al Qaeda suspects hiding with the Islamists."