Siegfried Hecker: Putin has destroyed the world nuclear order. How should the democracies respond?

One of the world’s foremost nuclear security and policy experts, Sig Hecker has spent much of an illustrious career working to enhance cooperation among US and Russian scientists and their governments in hopes of reducing nuclear risk. In fact, Hecker has literally edited the book on the subject, Doomed to Cooperate: How American and Russian scientists joined forces to avert some of the greatest post-Cold War nuclear dangers.