Danger ZoneIt has become conventional wisdom that America and China are running a "superpower marathon" that may last a century. Yet Hal Brands and Michael Beckley pose a counterintuitive question: What if the sharpest phase of that competition is more like a decade long sprint? The Sino American contest is driven by clashing geopolitical interests and a stark ideological dispute over whether authoritarianism or democracy will dominate the 21st century. But both