France–Monaco relations signed the Treaty of 1945 and the Agreement of 1963 on furthering their relationship. In 2002, the laws deriving from the Treaty of Versailles that governed relations between Monaco and France were renegotiated. It was finally ratified in 2005 with new terms that: upgraded France's representation from a consulate to that of an embassy; permitted other countries to accredit ambassadors to Monaco; and, formally recognised Monaco's ruling Grimaldi dynasty's succession scheme that was initially set out in the 1962 constitution, and which also extended eligibility to the ruling prince's daughters and other family members. The European External Action Service has
Monaco succession crisis of 1918 to one form or another of proximity of blood, and the Grimaldis' hitherto exclusive control of Monaco's dynastic marital policy was what threatened to enthrone a German duke on France's border, even after the Empire's defeat in war. Just as the ruling families of Britain, Russia, Belgium, and the Netherlands had all become patrilineally German by the twentieth century due to the propensity of monarchical heiresses, seeking dynastically equal marriages, to choose husbands from among Germany's many minor princely families, Monaco was on the verge of the same fate. Although the Grimaldis did not require inter-marriage with royalty by law