Jus sanguinis
Jus sanguinis (English: juss SANG-gwin-iss or yooss -, Latin: [juːs ˈsaŋɡwɪnɪs]), meaning 'right of blood', is a principle of nationality law by which nationality is determined or acquired by the nationality of one or both parents. Children at birth may be nationals of a particular state if either or both of their parents have nationality of that state.