President Trump continues to ramp up his pressure campaign to acquire Greenland, the Arctic island and semi-autonomous territory of NATO ally Denmark, citing U.S. national security needs. Top U.S. allies have rejected the president’s statements on acquiring Greenland and are preparing retaliatory tariffs if the U.S. acts… What's at stake and what's the likelihood of Trump actually taking action to acquire Greenland? Former Ambassador to Denmark, Alan Leventhal, checked in with Dan.