One nuclear bomb can wipe out almost half a million people, yet the United States and Russia have thousands of these weapons. And seven other countries have created atomic bombs as well.

There is no way to reverse time and get rid of these weapons, and countries will spend billions to maintain and upgrade their arsenals, but to what end?

Steve Clemons talks about US nuclear strategy with former Congressman John Tierney, the executive director of the Center for Arms Control and Non-Proliferation, and Jacob Heilbrunn, editor of The National Interest.

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