CHISINAU, Aug. 18 -- Maia Sandu has learned to be careful with her words. Moldova's president did not say a Russian cruise missile entered her country's airspace on Sunday evening. She did not say Russia is deliberately targeting neutral states on the margins of its operation in Ukraine. What she said was this: "I believe that some munitions arrive by chance and others arrive because they are sent."

The sentence lands differently when your police are photographing wreckage in a cornfield 20 kilometers from the Ukrainian border.

An S8000 Banderol cruise missile, manufactured by Russia's Kronshtadt Group and typically deployed from a Kronshtadt Orion strike drone, entered Moldovan airspace at 5:37 p.m. local time on August 17 during a Rus...