Under the 1961 Convention on the Reduction of Statelessness, for the purposes of determining the obligations under the convention, a birth on a ship or aircraft in international waters or airspace shall be treated as a birth in the country of the ship or aircraft's registration. However, the convention applies only to births where the child would otherwise be stateless. Since in most cases a child would be covered by one or more countries' jus sanguinis at birth (getting the same citizenship as its parents), this convention rarely comes into play.