In the past two weeks, Russia's president has once again slammed the U.S. for its missile defense plans in Europe. President Dmitry Medvedev told his nation Russia would aim its missiles at U.S. missile interceptors when they are deployed in Europe. He also said Russia might even pull out of the new START agreement, which limits both sides' strategic nuclear warhead deployments. We've heard these complaints and threats before from Moscow. Nevertheless, the tone of the Medvedev's remarks was quite sharp.