The Siege of Jerusalem (63 BC) occurred during Pompey the Great's campaigns in the east, shortly after his successful conclusion of the Third Mithridatic War. Pompey had been asked to intervene in an internecine war between Hyrcanus II and Aristobulus II for the throne of the Hasmonean Kingdom. His conquest of Jerusalem, however, spelled the end of Jewish independence and the incorporation of Judea into the Roman Republic as a client kingdom.