Along the narrow, snow-covered main street in Greenland's capital, international journalists and camera crews stop passersby every few meters (feet) asking them for their thoughts on a crisis which Denmark's prime minister has warned could potentially trigger the end of NATO.Greenland is at the center of a geopolitical storm as U.S. President Donald Trump is insisting he wants to own the island and the residents of its capital Nuuk say it is not for sale. Trump said he wants to control Greenland at any cost and the White House has not ruled out taking the island by force.U.S. Vice President...