To better understand the problem that dual use poses to those trying to prevent misuse and/or diversion of relevant science and technology McLeish’s research interests include inter alia: 

analysis of past chemical and biological warfare programmes, especially procurement and acquisition routes;

contemporary and historical understandings of the threat of chemical and biological weapons;

evolution of the treaty regimes set up to govern chemical and biological weapons;

accommodation within those treaties of scientific and technological change; 

assessments of contemporary dual use CBW policies and other non policy mechanisms, 

assessments of national and regional legislation associated with CBRN terrorism and WMD proliferation; and 

examination of the roles played by non traditional security actors in chemical and biological disarmament and what roles are/might be played by these actors to prevent (re)emergence.