Greeted with much fanfare in 2012, the Obama administration’s so-called pivot to the Asia-Pacific region has of late been beset by doubts and distractions. Developments in the Middle East and Europe have consumed a great deal of top-level attention, and declining U.S. defense spending has raised concerns that the military aspect of the rebalance may simply not be feasible. On top of this, the administration is working to convince two of its most important regional partners, Japan and South Korea, to move past an especially rough diplomatic patch and form a durable and consistent partnership on security and other matters. […]