Event recording from 19th of May 2017 Dr Patricia M Lewis is the Research Director, International Security at Chatham House. Her former posts include Deputy Director and Scientist-in-Residence at the Center for Non-proliferation Studies at the Monterey Institute of International Studies; Director of UNIDIR; and Director of VERTIC in London. Dr Lewis served on the 2004-6 WMD Commission chaired by Dr Hans Blix; the 2010-2011 Advisory Panel on Future Priorities of the OPCW chaired by Ambassador Rolf Ekeus; and was an adviser to the 2008-10 International Commission on Nuclear Non-proliferation and Disarmament (ICNND) chaired by Gareth Evans and Yoriko Kawaguchi. She holds a BSc (Hons) in physics from Manchester University and a PhD in nuclear physics from the Birmingham University. She is a dual national of the UK and Ireland. Dr Lewis is the recipient of the American Physical Society’s 2009 Joseph A Burton Forum Award recognizing 'outstanding contributions to the public understanding or resolution of issues involving the interface of physics and society'.