The phrase "rule of sword" typically refers to a situation in which power is gained or maintained through the use of force and violence. Synonyms for this phrase could include terms like "might makes right" or "the law of the jungle." Other phrases that convey a similar sense of violence and dominance might include "the iron fist," "the power struggle," or "the battle for supremacy." Whether used in reference to history, politics, or other contemporary issues, the notion of the "rule of sword" carries with it a sense of danger, uncertainty, and the need for vigilance.