'''Saint Kitts and Nevis''' (), officially the '''Federation of Saint Christopher and Nevis''', is an island country in the West Indies. Located in the Leeward Islands chain of the Lesser Antilles, it is the smallest sovereign state in the Western Hemisphere, in both area and population, as well as the world's smallest sovereign federation. The country is a Commonwealth realm, with Elizabeth II as Queen and head of state. It is the only sovereign federation in the Caribbean.