President Obama served notice on the newly elected Senators and the constituents who voted for them on Tuesday: He does not want them to have a say in one of the most important national security issues of the day – the strategic arms reduction accord Team Obama negotiated with the Russians earlier this year, known as the “New START” Treaty. Instead, Mr. Obama wants only yesterday’s Senate to determine the fate of an agreement that will slash U.S. nuclear forces in a way that will reduce them to numbers of deployed nuclear weapons vastly inferior to those the Russians will...