Critique of US Policy in South Sudan

Foreign Policy published on 25 February 2015 a long critical analysis of US policy in South Sudan titled "Unmade in the USA: The Inside Story of a Foreign-Policy Failure" by Ty McCormick, associate editor at Foreign Policy.

The article seems to suggest that the United States failed to engage sufficiently at critical periods after the independence of South Sudan.  What the article fails to acknowledge is that key actors such as Salva Kiir and Riek Machar must have a predisposition to accept a solution if outside intervention is to have any impact.  It is not clear that predisposition is present.