For over two years, the civil war  in Syria has been synonymous with cries of moral urgency. Do Something! shout those who demand the United States intervene militarily to set the situation there to rights, even as the battle lines now comprise hundreds of regime and rebel groupings and the rebels have started fighting each other. Well, then, shout the moral interventionists, if only we had intervened earlier!
Syria is not unique. Before Syria, humanitarians in 2011 demanded military intervention in Libya , even though the regime of Muammar Qaddafi had given up its nuclear program and had been cooperating for years with Western intelligence agencies. In fact, the United States and France did lead an intervention, and Libya today is barely a state, with Tripoli less a capital than the weak point of imperial-like arbitration for far-flung militias, tribes, and clans, while nearby Saharan entities are in greater disarray because of weapons flooding out of Libya.
The 1990s were full of calls for humanitarian intervention: in Rwanda, which tragically went unheeded; and in Bosnia and Kosovo where interventions, while belated, were by and large successful. Free from the realpolitik necessities of the Cold War, humanitarians have in the past two decades tried to reduce foreign policy to an aspect of genocide prevention. Indeed, the Nazi Holocaust is only one lifetime removed from our own—a nanosecond in human history—and so post–Cold War foreign policy now rightly exists in the shadow of it. The codified upshot has been R2P : the “Responsibility to Protect,” the mantra of humanitarians.
But American foreign policy cannot merely be defined by R2P and Never Again! Statesmen can only rarely be concerned with humanitarian interventions and protecting human rights to the exclusion of other considerations. The United States, like any nation—but especially because it is a great power—simply has interests that do not always cohere with its values. That is tragic, but it is a tragedy that has to be embraced and accepted.