NATO Secretary General Mark Rutte played a leading role in defusing the crisis over Greenland with US President Donald Trump

NATO Secretary General Mark Rutte played a leading role in defusing the crisis over Greenland with US President Donald Trump

NATO chief Mark Rutte warned Monday Europe cannot defend itself without the United States, in the face of calls for the continent to stand on its own feet after tensions over Greenland.

US President Donald Trump roiled the transatlantic alliance by threatening to seize the autonomous Danish territory -- before backing off after talks with Rutte last week.

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