Answer:
The new Japanese constitution, which came into effect on May 3, 1947, did not contain a clause specifically promising that Japan would remain allies with the United States. However, it did include Article 9, which renounces war and prohibits Japan from maintaining armed forces with war potential. This pacifist stance aligned with the United States' interests in ensuring Japan would not become a military threat post-World War II.
The close alliance between Japan and the United States was solidified through other means, particularly through the Treaty of Mutual Cooperation and Security between the United States and Japan, signed in 1951 and revised in 1960. This treaty established a strong security partnership, allowing for U.S. military presence in Japan and committing both nations to mutual defense in case of armed attack.
