MADRID (AP) — The heir to the Spanish throne, Princess Leonor, is to swear allegiance to the Constitution on her 18th birthday Tuesday, in a gala event that lays the groundwork for her eventual succession as queen when the time comes. The nationally televised ceremony in the lower house of Parliament is understood to symbolize the continuity of Spain's parliamentary monarchy and the institution’s allegiance to the chamber. She is expected to use the same oath as her father did when, as prince, he turned 18 in 1986.
On her 18th birthday, Spain's Princess Leonor takes another step towards eventually becoming queen