Volatile. Uncertain. Complex. Ambiguous. Pick your euphemism. The world can be both rich with culture and diversity and at the same time violently unforgiving. From nuclear-ambitious despots to resurgent Cold War adversaries, from refugee crises to climate change, threats and challenges exist in every corner of the globe. The question most often posed each year is which of these threats and challenges deserve our utmost focus? Where should we target our effort? What truly awaits us over the horizon?