to the operations being run against the united kingdom by intelligence officers in the embassy. and he's got a knowledge of the politics of moscow. gordievsky, of course, was able to brief his handlers on the dossier. he knows a lot of people in the system, and therefore he's got this unrivaled insight into how decisions are taken, how they think in the senior reaches of the politburo. he would be able to leave the embassy on a regular basis and to a safe house, where he would be debriefed. and if he could smuggle documents out of the embassy, so much the better. there'd be arrangements for copying those in the safe house.