There are usually between 5 and 10 people on the staff of HSP. Mostly based at Harvard and Sussex Universities, some are members of faculty, some are doctoral candidates and others are support staff or consultants.

The two current directors of HSP are Matthew Meselson at Harvard and Caitríona McLeish at Sussex. Meselson teaches and conducts research in the Department of Molecular and Cellular Biology. He is also the Faculty Chair for CBW Studies at the Belfer Center for Science and International Affairs, which is an element of the J F Kennedy School of Government, Harvard University. McLeish is a senior fellow of SPRU at the University of Sussex. The people currently on the staff of HSP are as follows:


Matthew Meselson, Director

Trained in chemistry and physics, Prof Meselson has conducted research mainly in the field of molecular genetics. He invented an important method for analyzing the densities of giant molecules and employed it to demonstrate how DNA replicates in dividing cells. He later showed that genetic recombination results from the splicing of DNA molecules. He also demonstrated the enzymatic basis of a process by which cells recognize and destroy foreign DNA, and discovered methyl-directed mismatch repair, which enables cells to repair mistakes in DNA. At present, he conducts research in molecular genetics and evolution.

Janet Montgomery, Administrator

Sandra Ropper, Archivist


Caitríona McLeish, Director

Caitríona McLeish is a Senior Fellow at SPRU. The main focus of her research is on the governance of dual use technologies in both the chemical and biological warfare environments. She has a particular interest in how such technologies were acquired and exploited in past programmes and also the methods and mechanisms by which different elements of the CBW governance framework try to accommodate scientific and technical change. McLeish's recent large research projects include: a project with colleagues at Cranfield University to systematically capture open source information about allegations of chemical weapons use in Syria and a project with colleagues from University College London to better understand the context of the negotiations for the Biological Weapons Convention.
Alex Mankoo, Lecturer

Alex Mankoo is a Lecturer at SPRU. His research focuses on the history of chemical weapons; in 2019 he completed his PhD (in Science and Technology Studies, UCL), which traced the history of teargas in British policy from 1925 to 1965. His research interests lie at the intersection of science, technology and security, particularly how chemical agents have been used and justified as means of control in state research programs. He recently co-edited a volume that brought together a range of disciplinary perspectives on this topic titled Chemical Bodies.
Joshua Moon, Research Fellow

Joshua Moon is Research Fellow at SPRU. The focus of his research is knowledge dynamics and global health emergencies. In 2019 he completed his PhD at SPRU which examined how knowledge is accumulated during major disease outbreaks and the methods by which that knowledge is then passed on. He recently co-authored a paper on the role of reports in investigations of alleged use. Joshua is currently engaged on a project evaluating Covid-19 testing systems.
Alexander Ghionis, Doctoral Researcher

Alexander Ghionis is a Doctoral Researcher at SPRU and is supervised by members of the Harvard Sussex Program. His research looks at change and continuity in the Organisation for the Prohibition of Chemical Weapons, with a focus on the role and culture of the Technical Secretariat. He holds a Master's Degree in Geopolitics and Grand Strategy from the University of Sussex.
Ioannis Valiakos, Research Assistant

Ioannis Valiakos is a Research Assistant with SPRU on the Harvard Sussex Program (HSP) since May 2016. He is currently working towards the completion of his PhD in Law at the University of Sussex. His thesis focuses on emerging artificially intelligent and lethal autonomous weapons systems through the lenses of International Humanitarian and International Criminal Law, exploring the question of a potential gap of legal responsibility that may emerge by the use of AI-based and autonomous lethal weapons systems during the conduct of hostilities.
James Revill, Associate Fellow

James Revill is an Associate Fellow with SPRU and a Researcher with the United Nations Institute for Disarmament Research (UNIDIR) where he leads a project around WMD Compliance and Enforcement. Prior to joining UNIDIR, he worked as a Research Fellow with HSP and has completed research fellowships with the Landau Network Centro Volta in Italy and the Bradford Disarmament Research Centre in the UK. He holds a PhD focused on the evolution of the Biological Weapons Convention from the University of Bradford, UK and has published and presented widely on WMD-related issues.