"Quizzical expression on face"
bbbbut....both the Daily Mail and Reuters report the aircraft to be the Tupolev Tu-160:
It showed a Tupolev Tu-160 strategic bomber dropping the bomb over a testing ground. A large explosion followed.
Don't I feel stupid. I saw Hercules C130 mentioned in the article and, while it seemed mighty strange that the Russians could get one and use it, I went with that. The C130 mention was for the MOAB, not the Russian bomb. Duh...
But, my point remains. The Tupolev Tu-160 can handle over 40 tons of payload.