Arthashastra
मध्यम उदासीनयोर् अभावे गुण अतिशयेन अरि प्रकृतीः साधयेत्, तत उत्तराः प्रकृतीः ॥
In the absence of the madhyama and neutral kings, he should, in virtue of his own excellent qualities, win the hearts of his enemy's subjects, and then direct his attention to other remote enemies.
english translation
madhyama udAsInayor abhAve guNa atizayena ari prakRtIH sAdhayet, tata uttarAH prakRtIH ॥
hk transliteration by Sanscript