What figure of speech is attack is the best form of defence?

The phrase "attack is the best form of defense" employs irony as a figure of speech. It suggests that taking proactive, aggressive action can be more effective in safeguarding oneself than merely reacting defensively. This paradox highlights the unconventional strategy of confronting threats head-on rather than retreating or fortifying. Additionally, it can also be viewed as a form of aphorism, conveying a general truth or principle about conflict and strategy.