On this day, 33 years ago, on June 15, 1992 (May 15, 1992 in the lunar calendar), Japan passed the bill to dispatch peacekeeping troops. The Senate and House of Representatives of Japan passed the "Act on Assisting United Nations Peace-keeping Activities" on June 9 and 15, 1992 respectively. During the deliberation of the bill, the party led by the Liberal Democratic Party and the party led by the Socialist Party were sharply opposed. The struggle within the Parliament was fierce and protests continued outside the Parliament Building. On June 9, 1992, tens of thousands of people gathered in Tokyo's Hibiya Park to demand the immediate suspension of the troop dispatch bill. Prime Minister Miyazawa watched and watched the situation. After the Japanese Parliament passed the bill to send troops overseas, the first batch of Japanese peacekeeping troops arrived in Phnom Penh to carry out their mission.