Kautilya's Arthashastra 7.5.4

7.5.4

neti kauṭilyaḥ //

Not so, says Kautilya: The conqueror should march against the strong enemy under less troubles, for the troubles of the strong enemy, though less, will be augmented when attacked. True, that the worse troubles of the assailable enemy will be still worse when attacked. But when left to himself, the strong enemy under less troubles will endeavour to get rid of his troubles and unite with the assailable enemy or with another enemy in the rear of the conqueror.