Thumpalumpacus
Major
Aparently, fairly large, from the looks of the damage to various sites since February.
It was even suggested at one time, that the "damage" to the Moskva was due to "someone smoking in an area they were not supposed to be".
Perhaps the US Surgeon General's warning on American cigarettes should be changed to:
"Warning, cigarettes are known to destroy ammunition dumps and airfields, sink Cruisers, explode munition factories and may complicate pregnancy"
As I noted above: even if the Russian explanation is 100% true, that bespeaks poor training, poor discipline, or both.
That's not something I'd want to admit to my enemy.