Which LoW principle justifies the use of all measures needed to defeat the enemy as quickly and efficiently as possible that are not prohibited by LoW?

• A. Humanity
• B. Military necessity
• C. Proportionality
• D. Distinction

Answer: (B)

Military necessity is the principle that allows using all measures necessary to achieve a legitimate military objective quickly and efficiently, as long as those measures are not prohibited by the Law of Armed Conflict. It provides the practical justification for choosing tactics, weapons, and procedures that advance the objective while staying within legal limits. This is balanced by other LOAC principles—distinction, proportionality, and humanity—that keep actions from harming civilians, ensuring force used is proportional to the objective, and protecting people from unnecessary suffering. In short, it answers the idea of acting with speed and effectiveness to defeat the enemy as long as the methods are legally permissible.