The JEM rebel group – which Sudan accuses of being backed by Chad – reached the outskirts of Sudan's capital, Khartoum, for the first time this weekend, raising concerns about a proxy war.
From Congo to Chad, dissidents are taking their grievances online. But are some rebels going too far?
Tens of thousands of Chadians fled when rebels stormed the capital earlier this month. They're returning cautiously.
After a green light from the UN, France decided Tuesday to scrap its neutrality and help fend off a rebel advance.
France did not repel this weekend's coup attempt on its former colony as it has in the past, but the UN Monday approved unilateral French action to support Chad's government.