The United States contends that Iran's intention is to acquire nuclear weapons, and that Russia has been secretly providing a boost to Iran's nuclear-arms program. "Even though the ostensible purpose of Russian assistance to Iran's nuclear infrastructure is for civilian applications, we assess that such support enhances Tehran's ability to support a nuclear weapons development effort," CIA analysts wrote in an unclassified report to Congress in 2002. ... "Russia says: 'Do not expect us to follow your line; we'll be part of the transatlantic community when it suits us.' It's the new Russia foreign policy," said Sarah Mendelson, an expert...