Under the Provisional Constitution of the Republic of China as drawn up by the provisional senate in February 1912, the National Assembly (parliament) elected the president and vice president for five-year terms, and appointed a premier to choose and lead the cabinet. The relevant ministers had to countersign executive decrees for them to be binding. The most important ministries were army, finance, communications, and interior. The navy ministry's importance declined significantly after most of its ships defected to the South's Constitutional Protection Movement in 1917. The communications ministry was also responsible for transportation, mail, and the Bank of Communications and was the base of the influential Communications Clique. The interior ministry was responsible for policing and security while the weaker ministry of justice handled judicial affairs and prisons. The ministry of foreign affairs had a renowned diplomatic corps with figures such as Wellington Koo. Because the generals required their skills, the foreign affairs ministry was given substantial independence. The ministry's greatest accomplishment was the 1922 return of German concessions in Shandong that were seized by Japan during World War I which greatly boosted the government's reputation. The foreign affairs ministry successfully denied the South's government of any international recognition all the way until the Beiyang government collapsed. China was a founding member of the League of Nations.