Military intervention refers to the use of armed forces by one or more countries to influence the situation in another country. This can occur for various reasons, including humanitarian aid, protecting human rights, or responding to aggression. The intervention can be unilateral, involving one nation, or multilateral, involving a coalition of countries, often sanctioned by organizations like the United Nations. Such actions can lead to significant political and social changes in the affected country. However, military intervention can also result in unintended consequences, including civilian casualties and prolonged conflict. The effectiveness and morality of military intervention are often subjects of debate among policymakers and scholars.