This book was published in 1972 and I bought this from Book Club Associates in1976.
It is an easy read with each chapter ending in what could be called a cliff hanger.
There were times when I, and I'm sure other readers, l thought that the main man was, shall we say, not thinking things through. It is high adventure with lots of actions and twists.
The book does shew its age and not just with its politics. Phones are landline only and international calls subject to waiting times just to be tried (I worked in a telephone exchange at the time and was only too familiar with delays and having to book outgoing calls). Contact lenses of the old type, old style "photostat" photocopying (my father managed a printshop in the 60s and there were genuine "photocopies" with an actual negative that was copied from and the newer, but lower quality, photostatic copies where the black copy powder could often come off) and so much more. Having said that, we read books written in the Regency period, Victorian and Edwardian periods and accept the technologies that were current in those times. I guess it is harder when dealing with a period that we have lived through ourselves.
I have 2500+ books and am slowly re-reading them.