The EU has warned Trump that his recent announcement to walk away from a longstanding disarmament deal with Russia, could cause a nuclear arms race between the Cold War states. Dr Keith Suter explains why the US wants to break from the Intermediate-Range Nuclear Forces Treaty (INF), how Russia is reacting to the news and why neither side can afford to go ahead with a dramatic increase in military expenditure.

See omnystudio.com/listener for privacy information.