This week, President Trump is meeting with allied heads of state at a summit of the North Atlantic Treaty Organization (NATO). Among the many items on the agenda is the question of enlarging NATO to include other countries such as Ukraine. Although Russian aggression in Ukraine has been rightly condemned, those who urge for NATO to accept Ukraine as a full member are making a grave mistake.

If Ukraine joined NATO, it would become an even more unstable hotspot that America would be obligated to defend. Why should the U.S. risk war with a nuclear-armed Russia in Moscow’s backyard? NATO is a military alliance to defend Europe, not a democracy-promotion machine intended to reorder the political equilibrium in every European country. Though Washington may wish it, NATO cannot solve every problem nor can it smooth over all local flash points.

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