Do you believe warfare should be used to gain more territory and achieve national interests?

I do not believe.

Explanation:

The notion of war is related to terms such as combat, battle, fight, fight or confrontation. In general, all of these concepts are interchangeable and synonymous, although each has a specific use that best fits the case. Independent of the concept, war only causes destruction, suffering and despair. No one gains territory, nor does it reach national interests in the face of war, quite the opposite. In a war only public money, prosperity, lives, peace and any other factor of happiness in the lives of citizens are lost.