Article by professor Freya Baetens, published in Max Planck Encyclopedia of Comparative Constitutional Law.
Under public international law, diplomatic protection is the exclusive prerogative of the state of nationality of an individual and its exercise is discretionary. By comparison, domestic constitutional law often grants citizens the right to diplomatic protection. As such, this body of law may entitle citizens to protection where international law does not. For the purpose of this article, Freya analysed domestic constitutions and case law relating to diplomatic protection all around the world. Access the article here.