The article best seller Constitution and the Basis of Defense Policy

Constitution and the Right of Self-Defense

Since the end of World War II, Japan made a decision not to
repeat the ravages of war and has worked hard, aiming to build a
peace-loving nation. The Japanese people desire lasting peace,
and the principle of paci sm is enshrined in the Constitution, of
which Article 9 prescribes the renunciation of war, the possession
of war potential, and the right of belligerency by the state.
Of course, since Japan is an independent nation, these provisions
do not deny Japan’s inherent right of self-defense as a
sovereign state. Since the right of self-defense is not denied, the
Japanese Government interprets this to mean that the Constitution
allows Japan to possess the minimum level of armed force
needed to exercise that right. Therefore, Japan, under the Constitution,
maintains the Self-Defense Forces (SDF) as an armed
organization, holding its exclusively national defense-oriented
policy as its basic strategy of defense, and continues to keep it
equipped and ready for operations....etc
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