A coup d'état is a sudden and illegal seizure of power from a government, typically executed by a small group, often military or political leaders. Unlike a revolution, which involves mass mobilization, a coup generally occurs swiftly and without broad public support. The motives behind a coup may range from dissatisfaction with government policies to power struggles within the ruling elite. Coups can lead to periods of instability and violence, particularly if they are met with resistance. Following a coup, the new regime often faces challenges in establishing legitimacy and governance, impacting the country's political landscape.