Neither a cold-blooded realist nor a bleeding-heart idealist, Barack Obama has a split personality when it comes to foreign policy. So do most U.S. presidents, of course, and the ideas that inspire this one have a long history at the core of the American political tradition. In the past, such ideas have served the country well. But the conflicting impulses influencing how this young leader thinks about the world threaten to tear his presidency apart -- and, in the worst scenario, turn him into a new Jimmy Carter.
Obama's long deliberation over the war in Afghanistan is a case study in presidential schizophrenia: After 94 days of internal discussion and debate, he ended up splitting the difference -- rushing in more troops as his generals wanted, while calling for their departure to begin in July 2011 as his liberal base demanded. It was a sober compromise that suggests a man struggling to reconcile his worldview with the weight of inherited problems. Like many of his predecessors, Obama is not only buffeted by strong political headwinds, but also pulled in opposing directions by two of the major schools of thought that have guided American foreign-policy debates since colonial times.
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