France–Sweden relations are the current and historical relations between France and Sweden. Both nations are members of the Council of Europe, European Union and the OECD. In August of 2022, France have fully ratified Sweden's NATO membership application. France strongly supports Sweden's NATO membership. History Early history One of the first contacts between France and Sweden was in 799 during the first Viking raids of the Frankish northern coast. In March 845 Viking Danish-Swedish King Ragnar brought 120 ships up the Seine river for the Siege of Paris. The Vikings left Paris after a month of battle when Frankish King Charles the Bald paid them 7,000 lbs of silver and gold. In 911 after multiple Viking invasions, Frankish King Charles the Simple conceded the town of Saint-Clair-sur-Epte to the Vikings. In 1499, France and Sweden signed a Trade Treaty for which Sweden sent France hides, skins, furs, butter, fish oil, herrings, whales, tar, timber for the navy, iron and copper. In exchange, the French sent salt Brouage, wheat, wine, canvas, sheets, silks and spices. Across the 16th century, French mercenaries such as Claude Collart and Pontus de La Gardie entered Swedish service. In 1631, during the Thirty Years' War, France and Sweden signed the Treaty of Bärwalde which obliged Sweden to maintain an army of 36,000 troops, and France to fund the Swedish army annually with 400,000 Reichsthalers. In the 1700s, French culture and the French language became a big influence on the Swedish monarchy. Swedish king Gustave III received a French education as a child. Several prominent Swedish nobles studied in France. Influenced by the French Academy of Sciences, Sweden created the Royal Swedish Academy of Sciences. Jean-Baptiste Bernadotte and Napoleonic Wars In 1805, Sweden entered into the War of the Third Coalition and fought against France in the Franco-Swedish War in an effort to defeat France under Napoleon Bonaparte. The war lasted until January 1810, when Sweden was defeated by France's then-ally, Russia. After the war, France and Sweden signed the Treaty of Paris (1810). The next year, French Marshal Jean-Baptiste Jules Bernadotte, who served under Emperor Napoleon, was elected as the heir-presumptive to King Charles XIII of Sweden, who was childless. Bernadotte was elected partly because a large part of the Swedish Army, in view of future complications with Russia, supported electing a soldier and partly because he was popular with the Swedish army because of the