Launching a war of aggression is to brazenly defy the conscience of the world.
Tips
history
Origin in 《左传·隐公十一年》: 犯五不韪而以伐人,其丧师也,不亦宜乎? — 'to commit the five wrongs and still attack others — no wonder he lost his army.' 韪 (wěi) means 'right' or 'proper.'