Monaco succession crisis of 1918 of this event, pursuant to the clauses of the treaty of 17 July 1918." The French government at the time was still the Vichy regime. Louis II died on 9 May 1949. The Principality of Monaco passed to his grandson, Rainier III. In the absence of an heir male, the ducal titles of Valentinois and Estouteville became extinct in French nobiliary law. Before Rainier III married Grace Kelly in April 1956, he notified the French government of his plans; the French ministry of foreign affairs replied with a message of official congratulations. Count Louis de Causans is suing the French
History of Monaco escaped arrest and fled to Switzerland. In August 1944, the Germans executed René Borghini, Joseph-Henri Lajoux and Esther Poggio, who were Resistance leaders. Under Prince Louis' secret orders, the Monaco police, often at great risk to themselves, warned in advance those people whom the Gestapo planned to arrest. The country was liberated, as German troops retreated, on 3 September 1944. The current ruler, Prince Albert II, succeeded his father Prince Rainier III in 2005. Prince Rainier, in turn, had acceded to the throne following the death of his grandfather, Prince Louis II, in 1949. The revised Constitution of Monaco, proclaimed