Former President Obama stood by President Biden’s commitment to the NATO alliance on Wednesday, days after former President Trump sparked concern around the globe by saying the U.S. should not defend NATO allies who fall short of their defense spending targets. “President Biden is absolutely right,” Obama wrote on X, formerly Twitter. “The last thing we need right now is a world that is more chaotic and less secure; where dictators feel emboldened and our allies wonder if they can count on us. Let’s keep moving forward.” Obama was responding to a statement from Biden saying the NATO alliance keeps...