How to resolve the Greenland standoff

President Donald Trump is right: The United States needs Greenland for its national security. But it doesn't need to actually own Greenland; Trump can easily address U.S. security concerns without taking full control of the island. Indeed, the model lies on another island just 90 miles off our shores — at the U.S. Naval base in Guantánamo Bay, Cuba.
In February 1903, President Theodore Roosevelt signed a lease agreement with Cuban President Tomás Estrada Palma giving the U.S. the right to "coaling and naval stations" at Guantánamo. Under the agreement, the U.S. recognized "the continuance of the ultimate sovereignty of the Republic of Cuba" over Guantánamo while Cuba agreed that "the United States shall exercise complete jurisdiction and control" over the base. In 1934, as part of a new "Cuban-American Treaty of Relations," the two countries locked in the lease, which they agreed would continue in perpetuity "so long as the United States of America shall not abandon the said naval station of Guantánamo or the two Governments shall not agree to a modification of its present limits." To this day, despite the rise of a hostile communist dictatorship on the island that would love to kick America out, the U.S. remains in full operational control of Guantánamo.