The fog of war that has been hovering over eastern Ukraine has now spread to the shores of the Potomac, and from there has inundated ever pore of western body politic. The party line is that pro-Russian rebels in eastern Ukraine have shot down Malaysia Airlines flight MH-17, using a surface-to-air missile provided by Russia, with Russia's support and complicity. The response is to push for tougher sanctions against Russian companies and Mr. Putin's entourage. None of this is based on fact. To start with, it isn't known that MH-17 was brought down by a surface-to-air missile; it could have been an air-to-air missile, a bomb on board, a mechanical failure, or the same (or different) mysterious force that brought down MH-370 earlier this year. Mysteries abound, and yet western media knows it's Mr. Putin's fault.