What principle does the concept of Ius Sanguinis refer to?

The concept of Ius Sanguinis refers to a principle where citizenship is determined by descent or parentage, meaning that a person acquires citizenship based on their parents' nationality or citizenship, regardless of where they are born. This principle emphasizes the familial connection to citizenship, establishing that if a child's parents are citizens of a specific country, the child is entitled to that citizenship as well, even if born in another location.

This contrasts distinctly with other models of citizenship, such as residency-based methods, where citizenship is granted based on living in a particular place for a certain duration, or humanitarian approaches that may confer citizenship to individuals based on their need for protection or asylum. Additionally, Ius Sanguinis is separate from naturalization, which involves a legal process by which a non-citizen can become a citizen after fulfilling specific criteria set by a country.