U.S. allies caution Trump on Syria strategy

By Warren Strobel, Yara Bayoumy and John Irish WASHINGTON/PARIS (Reuters) - Key U.S. allies in Europe are quietly expressing concern over President-elect Donald Trump's approach to Syria, warning that his pledge to work more closely with Russia, Damascus' main backer, will do little to diminish the terrorist threat emanating from Syria. The diplomatic persuasion campaign has taken on new importance in recent days as the Syrian army, backed by Russia, Iran and Shi'ite militias, appears poised to