The commander of U.S. forces there lays the first major war decision on Donald Trump’s desk. Fifteen years after the U.S. invasion, Afghanistan is in a “stalemate” that will require several thousand more Western troops to break, the war’s top U.S. commander told Congress. Gen. John “Mick” Nicholson’s testimony laid on Donald Trump’s desk the first major war decision — surge troops or not?  — just three weeks into his new and tumultuous administration, which so far has focused more intently on U.S. border security than overseas military engagements. The commander of NATO’s Operation Resolute...