Sky's military analyst Sean Bell explains why the United States is interested in Cuba, Venezuela and Greenland, as leaders hold Coalition of the Willing talks in Paris. He says all three nations are part of the US's area of influence, but the downside is Greenland is a member of NATO. "Before, we had 195 nations in the world and respected, big or small, their sovereignty. Now it feels like power is might, and all of a sudden it feels like the survival of the fittest. And that is a very worrying