France–Netherlands border in the context of "Collectivity of Saint Martin"

The Collectivity of Saint Martin (French: Collectivité de Saint-Martin), commonly known as simply Saint Martin (Saint-Martin, [sɛ̃ maʁtɛ̃] ), is an overseas collectivity of France in the West Indies in the Caribbean, on the northern half of the island of Saint Martin, as well as some smaller adjacent islands. Saint Martin is separated from the island of Anguilla by the Anguilla Channel. Its capital is Marigot.

With a population of 31,477 as of January 2021 on an area of 53.2 square kilometres (20.5 sq mi), it encompasses the northern 60% of the divided island of Saint Martin, and some neighbouring islets, the largest of which is Île Tintamarre. The southern 40% of the island of Saint Martin constitutes Sint Maarten, which has been a constituent country of the Kingdom of the Netherlands since 2010 following the dissolution of Netherlands Antilles. This marks the only place in the world where France borders the Netherlands.