China’s activities in the Western Hemisphere pose a direct challenge to US interests and regional security ... Donald Trump understands that modern threats – China’s predatory mercantilism and its massive military buildup, including the ability to destroy our reconnaissance satellites in orbit – requires an urgent reinvigoration of the 200-year-old Monroe Doctrine. The Monroe Doctrine, America’s fundamental national security imperative, seeks to exclude outside powers from the Western Hemisphere. It is key to protecting the U.S. and our neighbors from China’s malicious designs. ... Trump understands that Greenland and Panama aren’t merely the key in any potential conflict with China,...