Obama's fraught foreign policy legacy in Asia

U.S. President-elect Donald Trump's unpredictability makes it impossible to say with any certainty in which direction he might take U.S. foreign policy over the next four years. But the benefit of hindsight allows for a steely assessment of U.S. President Barack Obama's legacy on the world stage and particularly in Asia. His accomplishments -- and more so his failures -- create perils and opportunities for the incoming Trump team.