This op-ed originally appeared in Politico Magazine , Dec. 5, 2018. Secretary of State Mike Pompeo announced Tuesday that the United States will soon “suspend” its obligations under 1987 Intermediate-Range Nuclear Forces (INF) Treaty—an arms-control treaty credited with helping to end the Cold War – in response to the prolonged Russian violation of the agreement. If Russia does not return to compliance in 60 days, Pompeo said, the United States will formally announce its intention to withdraw from the treaty, as President Trump declared he would do last month. The two of us have advised...