Nnadi, the peacekeeper's commander, later told U.N. investigators that his forces had attempted to prevent the abductors from heading off with the civilians. The victims and bus drivers, though, said they were handed over without a fight. Several said they even saw the U.N. soldiers flashing "thumbs up" signs to the kidnappers as the buses drove off. The U.N. personnel peacekeepers, one of the bus drivers told investigators, "did nothing."

and

The mission's former spokeswoman, Aicha Elbasri, provided FP with the documents to draw attention to what she sees as UNAMID's failings and unwillingness to call out Khartoum for what she views as its deliberate targeting of Darfur's civilians and UNAMID peacekeepers. documents — which track the period from 2012 through the end of 2013 — constitute perhaps the largest single leak of internal documents on an active U.N. mission in the world body's history.

Start of a three part series in Foreign Policy here.

Disclosure: I am acquainted with the whistleblower (she's a very good friend of one of my mom's best friend). She's giving up her career, her vocation, and her livelihood to come forward as a matter of conscience.