It was quiet in eastern Ukraine last Wednesday. Indeed, it was another quiet day in an extended stretch of relative calm. The battles between the Ukrainian army and the pro-Russian separatists had largely stopped and heavy weaponry was being withdrawn. The Minsk cease-fire wasn't holding perfectly, but it was holding. On that same day, General Philip Breedlove, the top NATO commander in Europe, stepped before the press in Washington. Putin, the 59-year-old said, had once again "upped the ante" in eastern Ukraine -- with "well over a thousand combat vehicles, Russian combat forces, some of their most sophisticated air defense,...