What is meant by 'military intervention'?

Military intervention refers to the use of armed forces by one country, or a coalition of countries, to influence the internal affairs of another state, typically to achieve specific political objectives. This often involves deploying troops or engaging in military action to address situations such as conflict resolution, regime change, or responding to acts of aggression. The overriding goal is often tied to national interests or international stability rather than a purely defensive posture.

Deploying troops specifically for training purposes or engaging solely for defense does not encapsulate the proactive and sometimes confrontational nature of military intervention. Humanitarian aid, while noble, typically does not involve the use of armed forces in a way that aims to accomplish political ends in the same manner as military intervention. Therefore, the definition of military intervention focuses on the strategic deployment of military force to achieve broader policy objectives, making option C the most accurate representation of what military intervention entails.