Trump's pursuit of US independence will come at a cost

Independence is the core American value. George Washington warned future U.S. leaders to avoid foreign entanglements, Presidents Wilson and Roosevelt avoided the world wars for as long as possible, and later presidents have vowed to respond to foreign aggression "at a time and place of our choosing." President-elect Donald Trump has now declared a new form of U.S. independence, one that's likely to transform U.S. foreign policy. Each January, Eurasia Group publishes our list of top global political risks for the coming year. For 2017, there are many reasons why "Independent America" is our choice for risk No. 1.