Donald Trump has long treated NATO like a punching bag, leading many observers to proclaim the demise of the Western alliance. Some analysts have called NATO “a zombie alliance.” Others have announced that the United States is decoupling from Europe, or have pronounced the North Atlantic pact “dead in the water.” And yet, the quiet reality is that NATO, albeit wounded, is actually going strong. The alliance is resilient enough to withstand the abuse heaped upon it by a U.S. president, and too…