yusef lateef was 93 years old. to come on the "newshour": samantha power on the violence in two african countries; one reporter's exclusive interview with edward snowden; the dwindling number of monarch butterflies wintering in mexico; a year end assessment of public education reform and an entrepreneurial alternative to college. >> ifill: we take a look at two bordering african nations consumed by conflict, beginning with south sudan, where there fighting continued today, as fears of civil war prompted the united nations to send more help to the world's youngest nation. >> ifill: the security council voted to nearly double the size of the peacekeeping operation in south sudan-- hoping an additional troops will protect civilians from the worsening violence. secretary general ban ki-moon warned all sides in the conflict that the world is watching. >> attacks on civilians and the u.n. peacekeepers must cease immediately. the united nations will investigate reports of these incidents and of grave human rights violatio