相互 そうご確証 かくしょう破壊 はかいでしょう
sō gokakushōwa kaideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 相互確証破壊

1. Probably mutual confirmation destruction.; Probably self-destructive mutual confirmation.

Polite
Presumptive
Conjecture