Finally, on 10 June 1917, Charles Jonnart, the Allied High Commissioner in Greece, asked the king for his abdication. Under the threat of an invasion in Piraeus, the king agreed and went into exile, but without formally abdicating. The Allies did not wish to establish a Republic in Greece, so one of the members of the royal family had to stay and succeed him. Because the "Diadochos" George was also considered pro-German like his father, they wanted someone considered malleable, as a puppet ruler of Constantine I's enemies. Finally the younger brother of the "Diadochos", Prince Alexander, was chosen by Venizelos and the Triple Entente as the new king.