The provocation of the chief of a district (ráshramukhya), the officer in charge of the boundary, the chief of wild tribes, and a conquered king is what is termed external trouble. This should be overcome by setting one against the other. Whoever among these has strongly fortified himself should be caught hold of through the agency of a frontier king, or the chief of wild tribes, or a scion of his family, or an imprisoned prince; or he may be captured through the agency of a friend, so that he may not combine with an enemy; or a spy may prevent him from combining with an enemy by saying: "This enemy makes a cat's-paw of you and causes you to fall upon your own lord; When his aim is realised, he makes you to lead an army against enemies or wild tribes, or to sojourn in a troublesome place; or he causes you to reside at a frontier station far from the company of your sons and wife. When you have lost all your strength, he sells you to your own lord; or having made peace with you, he will please your own lord. Hence it is advisable for you to go to the best friend of your lord." When he agrees to the proposal, he is to be honoured; but when he refuses to listen, he is to be told: "I am specially sent to separate you from the enemy." The spy should however appoint some persons to murder him; or he may be killed by some concealed persons; or some persons pretending to be brave soldiers may be made to accompany him and may be told by a spy (to murder him). Thus the end of troubles. One should cause such troubles to one's enemy and ward off those of one's own.