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The Editorial Board

By The Editorial Board

The editorial board is a group of opinion journalists whose views are informed by expertise, research, debate and certain longstanding values. It is separate from the newsroom.

The free world exhaled on Wednesday when President Trump retreated from his administration’s threat to invade Greenland. That relief, however, masks the damage that Mr. Trump has done to America this week. Mr. Trump’s apologists once dismissed his bullying of Greenland as an attempt at humor. Instead, it has been something far darker. His immoral threats against a loyal NATO ally have escalated a crisis in U.S.-European relations, weakened one of history’s most successful alliances and hurt American interests in tangible ways.

NATO has been an important force for global stability and for the democratic values that our nation champions. It has made the world safer,........

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