Editors' Note -- Nuclear Powers and Terrorism : Challenges for Indo-Pakistani Strategic Stability / Tahir Mahmood Azad -- A Nuclear Procurement Channel for Iran : Mission Impossible? / Michele Capeleto -- How to Deal with North Korea's Nuclear Programme : Lessons Learned from the Iran Nuclear Negotiations / Jinho Chung --Managed Instability : The NATO-Russia Strategic Relationship / Thomas Frear -- The Strategy and Challenges for UK Civil Nuclear Plant Life Extension / Andrew Gilmour -- The Decision to Drop the Bomb : Remembering the Physicists / Emerson Moreno -- Reactor in a Box : Unpacking the Potential of Small Nuclear Reactors / Lizzie Murray -- Black Rain at Hiroshima and Nagasaki : The Hidden Complexities of Nuclear-Weapons Effects / Joseph Schofield -- The Future of the UK's Nuclear-Weapons Programme : Domestic and International Considerations / Rachel Staley -- What Use is a Treaty that's Not in Force? The UK and the Comprehensive Test-Ban Treaty / David Sully