What principle does the phrase "war is war" violate in linguistics?

Sentences such as war is war will be considered meaningless from the semantic point of view, but from the pragmatic point of view, it is not difficult for people to deduce such pragmatic meaning from them.

War is always cruel and meaningless. Children are always naughty, there is no need to get angry. In translation, we should carefully understand the implication of the author and convey the information to the readers completely.

The research results of pragmatics in various research fields provide scientific analysis methods for translation studies and apply them to translation research and practice. Applying pragmatic theory to translation can effectively guide translation practice, and in the process of translation, pragmatic theory has been further tested and improved. In a word, studying translation from the perspective of pragmatics provides a scientific theoretical basis and methodological guidance for the development of translation studies.

Linguistic principles:

Conversational meaning was first put forward by Grice, an American philosopher, because people do not strictly abide by the cooperative principle and its related norms in real communication for various reasons. It is not always to lie that one party does not abide by the principle of cooperation. Sometimes out of courtesy or context, he may say something that violates the principle of cooperation.

When the other party perceives that the other party's words do not conform to the cooperative principle, he will force himself to go beyond the superficial meaning of the other party's words, try to understand the deep meaning of the speaker's words, and find out where the speaker embodies the cooperative principle.