A day after the ouster of Venezuela's Nicolás Maduro, President Donald Trump is renewing his calls for an American takeover of the Danish territory of Greenland. Meanwhile, his top diplomat on Sunday declared the communist government in Cuba is “in a lot of trouble.” The comments from Trump and Secretary of State Marco Rubio underscore the administration is serious about taking a more expansive U.S. role in the Western Hemisphere. With thinly veiled threats in the aftermath of the Venezuela operation, Trump is rattling hemispheric friends and foes alike, spurring a pointed question around the globe: Who’s next?