By Ivan Timofeev , programme director of the Valdai Club.

US President Donald Trump’s recent push for peace in Ukraine highlights a troubling reality: the options for resolving the conflict are narrowing. Kiev continues to rely on NATO military support, while member states are ramping up defense spending and bolstering their arms industries. The Ukraine war may yet spark a broader confrontation between Russia and NATO. For now, the chances remain low – thanks, in large part, to nuclear deterrence. But how strong is that deterrent today?

It’s difficult to gauge the role of nuclear weapons in modern warfare. Their only combat use – the bombings…

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