President Donald Trump's interest in buying Greenland has ignited unprecedented interest in full independence from Denmark—a key issue in a parliamentary election on March 11.

As Trump continues to push to buy Greenland, here's a look at as to who owns the island and why the US President wants it.

President Donald Trump said in his joint address to Congress that the U.S. would assume control of Greenland "one way or the other." "We need Greenland for national security and even international security,