The thriller House of Dynamite, playing in theaters and streamed into our homes, leaves its audiences hanging as an unprepared US president must decide humanity’s fate after a surprise nuclear attack. Now picture the real president, Donald Trump, whose uninformed and garbled statement about resuming nuclear testing may have sounded the starting gun for an existentially dangerous multinational nuclear arms race. We can hope that those who may be able to influence this unstable and ill-informed president will devise a face-saving way for him to walk back the threat. But we can’t count on that happening.

In a recent track II session with US, Russian, and European former arms control diplomats, military officials, and analysts, there was something like a consensus that Trump misunderstood one or more reports about recent Russian nuclear activities. The claim is that either Russia or China conducted explosive, rather than subcritical, tests, a claim rejected by the head of the US Strategic Command. Not wanting to be out done by Russian President Vladimir Putin, Trump made his threat. When questioned about it, Trump reiterated the threat. This has caused profound uncertainty and confusion, leading the Kremlin to request clarification about US nuclear weapons testing policy.

Worth noting is that this brouhaha comes at a time when significant forces within the Republican Party advocate renewed testing. The Kremlin has yet to receive that clarification or another one in response to its offer to extend the most essential elements of the New START Treaty beyond its February expiration date.

Among senior arms controllers, there is an understanding that if the US or Russia resume testing, it will open the gates for extremely dangerous nuclear weapons proliferation. Among the candidates for a nuclear breakout are South Korea, where a majority of the population wants their nation to develop nuclear weapons out of fear of North Korea’s nuclear arsenal and growing uncertainties about Seoul’s military alliance with the United States. Other breakout candidates include Saudi Arabia, which recently concluded a military alliance with nuclear Pakistan and near-nuclear Iran. Despite Trump’s claims of having destroyed Tehran’s nuclear program, Tehran moved its highly enriched uranium prior to the Israeli and US missile strikes against its nuclear infrastructure. And as history teaches us, knowledge is not easily destroyed.

In our various nations we can use our people’s power to name, shame, isolate, and insist on no new nuclear weapons testing.

While Russia is reported to be in a position to resume explosive nuclear weapons testing in relatively short order, this is not the case for........

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