“He’s not made the sale to the American people. That’s why I think tonight is so important,” Boehner said. Obama doesn't appear to have the votes in the House or the Senate to win authorization, but those votes may not go forward given Russia's offer.

Russia on Tuesday urged Syria to turn over its chemical weapons to international control, a move Syria's government quickly endorsed. Obama on Monday said it was a significant development and could be a breakthrough to prevent a U.S. strike.

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