Bret Stephens: Brain-dead or not, NATO is essential

With the conclusion of the North Atlantic Treaty Organization’s 70th anniversary summit in London, it’s fair to say that Donald Trump thinks that most alliance members, starting with France and Canada, are a bunch of ungrateful and unhelpful freeloaders. Fair to say, also, that most of those members see Trump as an erratic, pompous, dangerous simpleton.There’s no reason they both can’t be right.The tone of the summit was set several weeks ago, when Emmanuel Macron gave an