The proliferation of weapons of mass destruction (WMD) and missiles for their delivery poses a threat to regional and global stability. 
A very wide range of industrial items and materials can assist WMD 
programmes and would-be proliferators but, in order to limit the 
burdens on exporters, only the most critical items appear on the 
Dual-Use Control Lists and thus automatically require an export licence. There are, however, many other less sensitive items which can be made licensable if they are, or may be, for use in a WMD programme.