I was surprised at how well this was done. I have watched it several times since finding it on Youtube.
Radsan makes several points in his paper, including first and foremost that the ending of Smiley's People may be the most unrealistic part. George makes an offer to Karla in writing without any help from the Circus's legal staff. I thought that was a very funny thing of Radsan to say, in reality, in the CIA at least, there would have been lawyers everywhere.
The bulk of the paper is taken up with the various rulings by our legal system of whether the courts can be used to enforce an agreement between an agency like the CIA and an agent. The short answer seems to be no, they can not. The agent either has to trust the agency or they have to get their cash up front as it were.
Among other anecdotes we learn that Pres. Abraham Lincoln personally hired a spy and then failed to pay him.
1. Now that I think of it, there is one sequence in Patriot Games (1992) that seems pretty accurate, up to a point, and that is sequence in the basement where they watch a special operation by live satellite. Accurate? Maybe not. But definitely amusing.