a presidential study directive (number 10 ↑ ) issued in 2011 that aimed to bridge the gap between national interest and altruistic intervention. It claimed that "preventing mass atrocities and genocide is a core national security interest" as well as "a core moral responsibility of the United States. Our security is affected when masses of civilians are slaughtered, refugees flow across borders, and murderers wreak havoc on regional stability and livelihoods. America's reputation suffers, and our ability to bring about change is constrained, when we are perceived as idle in the face of mass atrocities and genocide."