Today’s Three Martini Lunch with Radio America’s Greg Corombos and Jim Geraghty from National Review pulls no punches as President Obama’s approval ratings take another dip. They also discuss the administration’s accusation that U.S. Army Sergeant Bowe Bergdahl’s former platoon mates are guilty of “swift-boating” their former comrade. And they look at the Republican Senate races across the nation, especially in Mississippi, where Senator Thad Cochran and challenger Chris McDaniel look to be headed toward a run-off to decide a very bitter primary.