While the press corps chases accusations of Russian-Trump election collusion and illegal Obama Administration wiretaps, few noticed the Pentagon’s first public confirmation last week that the Kremlin is violating the 1987 Intermediate-Range Nuclear Forces Treaty (INF).

General Paul Selva, vice chairman of the Joint Chiefs of Staff, told Congress that Russia has deployed a land-based cruise missile that violates the “spirit and intent” of that arms pact. “The system itself presents a risk to most of our facilities in Europe...