If an army is making a predictable journey by land then it's surely very easy for a competent air force to eliminate them, no matter how many troops we're talking about. It's like stamping on ants.
It managed to get from Rostov to Voronezh barely touched by the RAF.
I just think we should suspend judgment on Boris until we have all the facts through an inquiry, police investigation, and parliamentary commission...then we should explode him.
also,
I'd like to be called Lord Poopy His Most Gloriously Excellent.