Dr Patricia Lewis is the Research Director for International Security at Chatham House. Previously she was Deputy Director and Scientist-in-Residence at the Center for Nonproliferation Studies at the Monterey Institute, Director of the United Nations Institute for Disarmament Research (UNIDIR) and Director of VERTIC (Verification Research, Training and Information Centre). Dr Lewis served on the 2004–06 Weapons of Mass Destruction Commission (WMD), the 2010–11 Advisory Panel on Future Priorities of the Organization for the Prohibition of Chemical Weapons (OPCW) and was an Advisor to the 2008–10 International Commission on Nuclear Non-proliferation and Disarmament (ICNND). She was a Commissioner on the 2014–16 Global Commission on Internet Governance and is on the EEAS Space Advisory Board (SAB) as a Senior Space Advisor to the EU Special Envoy for Space.