Dr. Tytti Erästö from SIPRI gives us a full update on the current global situation regarding nuclear weapons and disarmament. What is happening in world politics on this topic? What has changed since the Cold War? Why are Russia and the US pulling out from disarmament treaties? Is it even theoretically possible to reach a nuclear weapons free world? Are nuclear weapons contributing to a more safe world with less war or is it the greatest risk to human existence today?