He then chose to enter Lausanne University to study Science, but he death of his elder brother King Ananda Mahidol in Bangkok on the 9 of june 1946, changed the course of his life completely, for the law of Succession bestowed on him the arduous but challenging funtion of the Thai Crown. His Majesty decided to go back to Switzerland for another period of study, but this time in the subject of political Science and Law in order to equip himself with the proper knowledge for government