Biden Could Return Nuclear Weapons To Ukraine

The one gold-standard security guarantee that Ukraine wants is an invitation to join NATO. But it could not get that under Mr. Biden, and an invitation is unlikely during Mr. Trump’s presidency.

So U.S. and European officials are discussing deterrence as a possible security guarantee for Ukraine, such as stockpiling a conventional arsenal sufficient to strike a punishing blow if Russia violates a cease-fire.

Several officials even suggested that Mr. Biden could return nuclear weapons to Ukraine that were taken from it after the fall of the Soviet Union. That would be an instant and enormous deterrent. But such a step would be complicated and have serious implications.

Andriy Zagorodnyuk, a former Ukrainian defense minister, said in an interview that for a successful cease-fire, Ukraine and its allies must reverse the momentum on the front line to set conditions for talks.

Ukraine must also have sufficient firepower in reserve to deter any cease-fire violations, he said, for example with an arsenal of longer-range weaponry to inflict immediate damage if Russia resumes hostilities.

Ukraine’s army, though on a back foot now, has held out for more than two and a half years against a larger, more powerful opponent. “The fact that we went 10 rounds with Mike Tyson is a success,” Mr. Zagorodnyuk said.

But that was with billions of dollars in U.S. and European weapons. Now that supply is about to dry up, officials on both sides of the Atlantic say.