Besides all the speech making, there was some real business to deal with at the United Nations Wednesday. President Barack Obama managed to get Russia to agree to tougher sanctions against Iran. He also convinced Moscow and Beijing to support a Security Council resolution to curb nuclear weapons. “I told His Excellency Mr. President that we believe we need to help Iran to take a right decision,” Russian President Dmitry Medvedev said. He added that “sanctions rarely lead to productive results, but in some cases, sanctions are inevitable.” White House officials were thrilled. “I couldn’t have said it any better myself,”one Obama senior adviser said.