Sweden voted in favor of the United Nations Partition Plan for Palestine proposed by UNSCOP (chaired by Swedish lawyer Emil Sandström) in 1947, which provided the legal foundation of the creation of the State of Israel, and offered the services of Count Folke Bernadotte, a Swedish diplomat and nephew of the then-reigning King Gustaf V of Sweden, to assist the United Nations in negotiations between Arab and Palestinian residents. The Swedish nobleman arranged a shaky truce between the new State of Israel and Arab neighbors who had mounted an attack on it in May 1948, then attempted to secure a more lasting peace. On 17 September 1948, a Zionist militant group, Lehi (group), also known as the Stern Gang, assassinated Bernadotte.