The last two years have upended the international order. The Islamic State's push into Iraq in 2014 blurred the Middle East's borders, Russia's annexation of Crimea and war in eastern Ukraine brought back realpolitik back to Europe's doorstep, and a failed military coup in Turkey earlier this month triggered widespread purges - shaking the stability of a vital Western ally. And that's not even mentioning Europe's migration crisis and an unpredictable U.S. election this year that has left much of the world feeling uneasy.