In 1921 the Washington Conference was convened against the background of the infringement on the Covenant of the League of Nations, opposition to the renewal of the Anglo-Japanese Alliance both in Japan and Britain, the US's desire for abrogation of the Anglo-Japanese Alliance due to its clash of interests with Japan, and the cooperative policy of the Japanese Government toward the US.
1921年、国際連盟規約への抵触、日英双方国内での日英同盟更新反対論、日本との利害の対立から日英同盟の廃止を望むアメリカの思惑、日本政府の対米協調路線を背景にワシントン会議が開催された。