What happens when the US–Russia nuclear arms control treaty ends?

For more than five decades, nuclear arms control treaties were enforced between Russia and the US until this week. The last agreement has been allowed to lapse without a new one to replace it. So, why has this happened, and what are the dangers?  In this episode:  Thomas Countryman, former U.S. Assistant Secretary of State for International Security and Non-Proliferation under the Obama administration Rebecca E Johnson, Co-founder and first President of the International Campaign to Abolish Nuclear Weapons Nikolai Sokov, Senior Fellow at the Vienna Center for Disarmament and Non-Proliferation Host: Tom McRae Connect with us: @AJEPodcasts on X, Instagram, Facebook, and YouTube