Uncertainty surrounding U.S. defense-spending levels in fiscal year 2013 and beyond is preventing the Pentagon from making key decisions about long-term strategy and investments, Defense Secretary Leon Panetta said today. "We're developing a 2014 budget that, to some extent . . . is not based on what Congress has done because they haven't done it," Panetta lamented. "We don't know what the 2013 budget is going to be. I've got a six-month [continuing resolution] on the 2013 budget. So I...