Now both the Baba Yaga's and the Red Army vets had known they had a traitor in their midst before the Invasion began and it was only as the force got close to the Washington DC coast that the planted
false messages
the higher ups had sown in the lower ranks had allowed
them to pinpoint the traitor
it was
Ivan,a ex radio operator aboard a Red ANavy
submarine
who was currently manning one of the radio sets
aboard Hut 457
Once his identity was known the Secret Committee went to work
dealing with him by
seeking his weakness to use against him.
Which turned out to be
his secret love of the character
Ludmilla in the decadent Western animation
Bartok the Magnificent.
So the night before they knew he was going to defect to the enemy
the Secret Committee plied Ivan
with a bottle of vodka laced with a potion guaranteed to bring
out on the outside 99 times what he was in the inside.
It was a slower acting potion them the fictional one on the film
but once they'd given it to Ivan
they were eager to see him off
before he transformed into whatever he was going to transform into....