Tito's government in Yugoslavia. April 28 – Kinderdorf Pestalozzi (Pestalozzi Children's Village) is established at Trogen, Switzerland to accommodate and educate orphans of World War II, according to Johann Heinrich Pestalozzi's principles. April 29 – Trials against war criminals begin in Tokyo; the accused include Hideki Tōjō, Shigenori Tōgō and Hiroshi Ōshima. May May 1 – At least 800 Indigenous Australian pastoral workers walk off the job in Northwest Western Australia, starting one of the longest industrial strikes in Australia. May 7 – Tokyo Telecommunications Engineering (later renamed Sony) is founded, with about 20 employees. May 9 – King Victor Emmanuel III of Italy abdicates, and is succeeded by his son Umberto II. May 10 Jawaharlal Nehru is elected leader of the Congress Party in India. The first V-2 rocket to be successfully launched in the United States is fired from White Sands Missile Range. May 21 – Manhattan Project physicist Dr. Louis Slotin accidentally triggers a fission reaction at the Los Alamos National Laboratory in the United States and, although saving his coworkers, gives himself a lethal dose of hard radiation, making him the second victim of a criticality accident in history (the incident is initially treated as classified information). May 25 – The Emirate of Transjordan becomes the Hashemite Kingdom of Transjordan when its parliament makes the ruling amir Abdullah their king on the day it ratifies the Treaty of London. May 26 – 1946 Czechoslovak parliamentary election: Communists win with (38%), in the last election before communists take power. May 31 – A Greek referendum supports the return of the monarchy. June June 1 Ion Antonescu, prime minister and "Conducator" (Leader) of Romania during World War II, is executed; he was found guilty of betraying the Romanian people for benefits of Germany and sentenced to death by the Bucharest People's Tribunal. D'Argenlieu, French High Commissioner for Indo-China, recognizes an autonomous "Republic of Cochin-China" in violation of the March 6 Ho–Sainteny agreement, opening the way for conflict between the Viet Minh and France. June 2 – 1946 Italian institutional referendum: Italians vote to turn Italy from a monarchy into a republic. In the simultaneous 1946 Italian general election, the first since the end of World War II and also the first in which women are allowed to vote, the Christian Democracy party, led by Prime Minister Alcide De Gasperi, wins most seats in the Constituent Assembly of Italy