President Obama and former President Bill Clinton golf together in September 2011. The former president is campaigning for Obama, four years after the two men exchanged harsh words during the Democratic primary battle between Obama and then-Sen. Hillary Clinton.
For weeks now, war has been simmering along the world's newest border between Sudan and South Sudan. Both countries blame the other as the aggressor in a conflict that includes disputes about contested territory and about access to oil reserves. Before an American sponsored peace agreement, what's now South Sudan fought a long war for independence that killed an estimated one and a half million people. Now less than a year after separation, the two states stand on the brink of full scale war.