 With Pamplona on his hands and the royal family in Béarn, Ferdinand further justified his claim on the Crown of Navarre by "de iure propio", entitlement in his own right.Another claim involved a so-called "right of way" across Navarre in order to achieve military goals in Guyenne, supported by Ferdinand's divine right as a king.Ferdinand also claimed that he was "observing international treaties" by invading Navarre in order to help his ally England.