Pages 44-45 from FCO 37/2114 - The Nuclear Policy of Pakistan 1979

The telegram is marked as confidential and discusses instructions for approaching foreign governments regarding nuclear export controls. The main focus is on extending export controls to a specific type of equipment called inverters or frequency changers that could be used in uranium enrichment with gas centrifuges. The UK has decided to unilaterally control such exports due to concerns that a current export order for Pakistan may be intended for a covert nuclear weapons program. The aim is to prevent Pakistan from obtaining inverters from other suppliers. However, the UK wants to handle the matter in a way that avoids provoking Pakistan and destabilizing the region. They emphasize the broader non-proliferation aims and do not plan to raise the issue with Pakistan unless prompted by them. The telegram also mentions variations in approaches for Vienna and Canberra due to their non-membership in the Nuclear Suppliers Group.