This month, 122 nations finished work on a nuclear weapons ban treaty. The goal, to rid the planet of nuclear weapons. The Cold War is over, but states with nuclear weapons remain very attached to their 15,000 warheads.

Is it time to do away with those weapons or at least rethink nuclear weapons policy? Is the new global treaty the right way to pursue denuclearization?

To help us answer those questions are:

• Beatrice Fihn, executive director of the International Campaign to Abolish Nuclear Weapons

• Alexandra Bell, senior policy director at the Center for Arms Control and Non-Proliferation

• Matthew Bunn, professor of practice at the John F. Kennedy School of Government at Harvard University and co-principal investigator at the Project on Managing the Atom

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Recorded July 19, 2017.

Hosted by Luke Vargas.