Of the many foreign policy pledges that President Trump made as a candidate, one of the few worth keeping is to improve relations with Russia. Fueled most recently by Russian interference in the American election and differences over Syria, tensions between Washington and Moscow compromise American interests in Europe, the Middle East and beyond. If Mr. Trump is serious about reducing those tensions and mending ties with the Kremlin, he should use the occasion of this week’s summit conference in Brussels to call for a halt to NATO enlargement.
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Charles Kupchan: Is NATO getting too big to succeed?
Ukrainian woman holds NATO emblem during the rally in 2014 in support of a national referendum on whether Ukraine should join the alliance.
