The CEO of the Panama Canal Authority rejected the demands of President-elect Donald Trump, who escalated a conflict over the vital trade passage at a Mar-a-Lago press conference on Tuesday. Trump has repeatedly claimed that Panama charges American vessels “exorbitant prices” to travel through the waterway,

Trump has made several suggestions this week of ways to redraw the map. Here’s what to know about his interest in Greenland, the Panama Canal, Canada and the “Gulf of America.”