Most Russian twitter channels later said that it is fake news.Russian twitter channels claiming an American and British general have both surrendered:
Obviously doesn't mean much without proof or an official statement. If I was Putin I'd keep it quiet until the end of the war as to not provoke hostility in the west.
I definitely think there are some foreign NATO members hiding in the bunker. A senior Chechen commander confirmed it on camera last month. Whether NATO were dumb enough to have senior figures there remains to be seen.
I sense a Nuremberg trial if true...