Hypersonic war

The United States and Russia have adopted their respective nuclear weapons postures. Both countries are entering a new age of war – the age of hypersonic weapons. We are told Russia’s hypersonic weapons can render the US-led missile defense system ‘useless.’ Can Washington allow this to stand, and are we now in a new arms race?

CrossTalking with George Szamuely, Daniel McAdams, and Mary Dejevsky.