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Whither Nuclear-Arms Control?

The purpose of nuclear-arms control is obvious, but the means of achieving it have become more complicated than ever. What worked in the past may not work in the present, and tactics to rein in one country could prove disastrous if pursued with others.

LOS ANGELES – Is nuclear-arms control unraveling? The 1987 Intermediate-Range Nuclear Forces Treaty (INF) has collapsed, the 2015 Iran nuclear deal is teetering, and North Korea has continued to expand its nuclear and ballistic-missile arsenal. Worse, it is unclear whether the United States will stick with the New START Treaty when it expires in 2021. That agreement limits (at 3,000) the number of strategic weapons Russia and the US have pointed at each other.