A year ago , war broke out in the world 's newest nation , South Sudan . Rooney Mara says war has ravaged nation but its people retain hope . Mara : " I think that there is a lot of optimism and determination to overcome this conflict because we are not going back into civil war.
A year ago , war broke out in the world 's newest nation , South Sudan . Rooney Mara says war has ravaged nation but its people retain hope . Mara : U.S. is looked to as a nation that could be key in pushing for peace .