The biggest funder of anti-nuclear war programs is taking its money away

The Ukraine war has been devastating enough for civilians in that country, but it also carries the seeds of a graver global threat. Russian President Vladimir Putin has been rather explicitly threatening to escalate to using nuclear arms, particularly if Western countries get in his way.

President Joe Biden has sought to reassure Americans that a nuclear exchange is unlikely. He’s probably right. But the cost of such a war — we’re talking about a potential extinction-level event here, though the chances of outright extinction have declined somewhat as nuclear arsenals have shrunk — makes...