Trump's foreign policy in spotlight after military withdrawals

US politicians and international allies scrambled Friday to make sense of President Donald Trump's momentous foreign policy decisions for Syria and Afghanistan -- epic reversals that prompted Defense Secretary Jim Mattis to quit.Trump's historic moves to pull out of Syria and slash troop numbers in Afghanistan run counter to years of US doctrine in the region, and set the stage for a cascading series of events that could well result in more bloodshed across a scarred region.While many Americans