Introduction / Daniel H. Joyner and Marco Roscini -- Amendment and modification of non-proliferation treaties / Malgosia Fitzmaurice and Panos Merkouris -- Provisional application of non-proliferation treaties / Andrew Michie -- Interpretation of non-proliferation treaties / Nigel White -- Violation of non-proliferation treaties and related verification treaties / Eric Myjer and Jonathan Herbach -- Withdrawal from non-proliferation treaties / Daniel H. Joyner and Marco Roscini -- The 'injured state' in case of breach of a non-proliferation treaty and the legal consequences of such a breach / Matthew Happold -- Non-proliferation law and countermeasures / Sahib Sing -- State responsibility consequences of termination of or withdrawal from non-proliferation treaties / Dieter Fleck -- Conclusions / Daniel H. Joyner and Marco Roscini