President
Donald Trump starts the new year knee-deep in daunting foreign policy challenges at the same time he'll have to deal with a likely impeachment trial in the
Senate and the demands of a reelection campaign.
American troops are still engaged in America's longest war in Afghanistan.
Add to that simmering tensions with
Iran, fallout from Trump's decision to pull troops from
Syria, ongoing unease with
Russia and
Turkey, and erratic ties with European and other longtime Western allies.