Explainer: How will midterm election results affect U.S. foreign policy?

WASHINGTON, Nov. 5 (Xinhua) -- The Democrats' sweeping victory in the U.S. midterm elections could give the party greater leverage to challenge President Donald Trump's policies, but the extent of their influence remains uncertain. With Democrats poised to take control of Congress, the party is expected to step up scrutiny of Trump's military actions against Iran, seek to roll back some of his tariffs and push for stronger support for Ukraine. However, the president's executive authority and vet