onald Trump is right: America’s leaders are stupid. They’re nothing but a bunch of losers. Well, at least when it comes to Afghanistan and Pakistan. That’s the only conclusion to be reached following two big developments this week. The first was President Barack Obama’s announcement that the United States will decelerate its military drawdown from Afghanistan. Instead of preserving only a small force of about 1,000 troops, the new plan will station 9,800 in the country until 2016 and 5,500 into 2017. Their mission will be limited to training Afghan forces and supporting counterterrorism operations. This will help promote, in...