Japanese political system

Unlike the American political system and the British political system which essentially have existed in their current form for centuries, the present Japanese political system is a much more recent construct dating from Japan's defeat in the Second World War and its subsequent occupation by the United States. The post-war constitution of 1947 is an anti-militarist document which includes the renunciation of the right to wage war and prohibits the maintenance of armed forces although later a limited self-defence force was permitted.
The constitution was drawn up under the Allied occupation. It is a rigid document and, since its adoption, no major amendment has been made to it.