परव्यसनमप्रतिकार्यं चेत्पश्येद्द् हीनोऽप्यभियायात् ॥ कZ_०७.३.१७ ॥
paravyasanam apratikāryaṃ cet paśyed hīno'py abhiyāyāt
If he sees that the enemy’s calamity cannot be effectively remedied, then even if inferior he should march to attack.
A breakdown the enemy cannot quickly stabilize—e.g., fiscal collapse, decisive defeat, succession rupture, mass defection—creating a time-bound chance for even a weaker state to gain.