(iv) According to Arthashastra, the State should follow a six-fold policy with other States: (1) Sandhi (treaty of peace); (2) Vigrah (war); (3) Asana (neutrality) (4) Yana (marching) - presumably a threat; (5) Samsrya (alliance) and (6) Dwidibhava (making peace with one and end war with another).