Invasion refers to the act of forcefully entering and taking control over another country's territory without consent. It often involves military aggression and violates international norms.
Related terms
Occupation: Occupation occurs when a foreign power establishes control over the territory of another country following an invasion.
Annexation: Annexation is the formal incorporation of one state's territory into another state by legal or political means.
Sovereignty: Sovereignty refers to a nation-state's supreme authority and power to govern itself independently within its own borders without interference from external forces.