The signing ceremony in Moscow was a grand affair. For Barack Obama, foreign policy neophyte and "reset" man, the arms reduction agreement had a Kissingerian air. A fine feather in his cap. And our president likes his plumage. Unfortunately for the United States, the country Obama represents, the prospective treaty is useless at best, detrimental at worst. Useless because the level of offensive nuclear weaponry, the subject of the U.S.-Russia "Joint Understanding," is an irrelevance. We could today terminate all such negotiations, invite the Russians to build as many warheads as they want, and profitably watch them spend themselves into...