(Reuters) - As the Obama administration considers whether to arm Syrian rebels, former President Bill Clinton increased pressure for a stronger U.S. role in Syria's civil war, short of sending in U.S. troops, according to a report. "Nobody is asking for American soldiers in Syria," Clinton said, according to the report from the newspaper Politico published late Wednesday. "The only question is: now that the Russians, the Iranians and the Hezbollah are in there head over heels ... should we try to do something to try to slow their gains and rebalance the power so that these rebel groups have...