Alliances: When spies give military secrets to a foreign power, it's espionage. When an American president does it, betraying an ally to befriend a longtime foe, what do we call it? According to diplomatic cables obtained by Britain's Daily Telegraph, mined from the thousands of classified documents released by WikiLeaks, the U.S. government agreed to provide Russia with information on the British nuclear deterrent as part of the deal behind the ratification and signing of the New START treaty. Specifically, the Telegraph reports, the U.S. provided Moscow with the serial numbers of each Trident missile in the British ballistic missile...