मनुस्मृति - न युद्धेन कदाचन

साम्ना दानेन भेदेन समस्तैरथवा पृथक् |
विजेतुं प्रयतेतारीन् न युद्धेन कदाचन ||

- मनुस्मृति

First one must exercise reasonable patience. Then We must try to concede some ground - compromise. Then we must try to penetrate the adversary's thinking and try to change it. All these are the methods are to be employed separately or together to win over an enemy. Waging a war is never a solution.

- Manu Smriti