Democrats are crying foul over GOP suggestions that President Obama has a “secret deal” on missile defense with Russia. The fight began in March, when a hot mic at a summit caught Obama telling then-Russian President Dmitry Medvedev that he’d have more “flexibility” on the issue after the election. Medvedev famously responded that he would transmit that information to Vladimir Putin, who is now Russia's president. Republicans immediately attacked Obama for making a secret deal, and they used this week’s floor debate on the Defense authorization bill to highlight their argument. No one in Congress has been more vocal about...