Reform of the United Nations and the US-Japan cooperation

Security Council

Number of U.N. Member States

Number of Security Council Seats

Note: In 1945, the Security Council had five permanent and six non-permanent members. Despite the dramatic increase in the number of the U.N. Member States, the number of seats on the Security Council rose from 11 to 15 (the number of non-permanent seats was raised from 6 to 10 ) only once, in 1965.