U.N. Secretary-General Ban Ki-moon on Monday "strongly condemned the killing in north-eastern Nigeria of three doctors from the Democratic People's Republic of Korea, calling the attack and other recent incidents of violence against health workers 'unacceptable,'" the U.N. News Centre reports (2/11). "Those killings came quickly after gunmen shot dead at least nine female polio vaccinators Friday in Kano, the most populous city of Nigeria's predominantly Muslim north," the Associated Press/Washington Post writes, adding, "The U.N. chief said these acts of 'outrageous violence' ... could have devastating effects in the fight to improve the health of people everywhere, [U.N. spokesperson Martin Nesirky] said."