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On 06/01/2012 10:57, Paul Rigg wrote:
I think his point was, and I think he is right, that the DDR authorities
allowed anyone to cross the wall who was either not one of their own
nationals or a national of another country (ie the Eastern Block) with
whom they had an agreement to stop travel.

Did Soviet officers often cross into West Berlin for the day?
Some most certainly did. To keep an eye on the allies, and also to provide a
guard at Spandau Prison. That is why the Russians would not free him.

The West also had military missions into East Berlin.