The clock for the New Strategic Arms Reduction Treaty runs out on February 5. The Trump administration has not taken up Russia’s offer to extend the treaty, believing it has leverage to get something more from the Kremlin, and it has even threatened an arms race.

This is delusion and bluff. If the administration does not change course, New START will lapse and, for the first time in decades, U.S. and Russian nuclear forces will be under no constraints.

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