Peace is usually defined as no one trying to take the stuff I want.

I never viewed "diplomacy" as requiring military might.

I always thought that was a "threat" or "ultimatum"

www.dictionary.com
Ultimatum: A statement, especially in diplomatic negotiations, that expresses or implies the threat of serious penalties if the terms are not accepted.

We have got all we want in territory, but our claim to be left in undisputed enjoyment of vast and splendid possessions, largely acquired by war and largely maintained by force, is one which often seems less reasonable to others than to us.
Translation: We took it by military might and you should NOT try to take it from us by military might.