In the first six months of U.S. President Donald Trump's administration, five foreign policy challenges have dominated the national and international spotlight. China's expanding economic and military role, Russia's tenuous relations with Europe and the Middle East, ongoing wars in Afghanistan and Syria, threats stemming from North Korea and Venezuela, and Europe's future amid rising populist movements in the United Kingdom and France have taken center stage among the world's policymakers. Through it all it has been easy to forget that, not so long ago, much of the world's attention was fixed on the Balkans....
