AS the presidential candidates enter the three-month sprint to November, Barack Obama must be wondering: If that didn't do it, what will? "That" is his Berlin speech. "It" is assuage anxieties about his understanding of the need to supplement diplomacy with military force. Obama exhorted Germans to be more willing to wage war, in Afghanistan. He was right to do so. But polls taken since his trip abroad don't indicate that Obama succeeded in altering the oddest aspect of this campaign: Measured against his party's surging strength, he's dramatically underperforming. Surely this is related to anxieties about his thin resume...
