The Holocaust in Lithuania resulted in the near total destruction of Lithuanian (Litvaks) and Polish Jews, living in Generalbezirk Litauen of Reichskommissariat Ostland within the Nazi-controlled Lithuanian SSR. Out of approximately 208,000–210,000 Jews, an estimated 190,000–195,000 were murdered before the end of World War II, most between June and December 1941. More than 95% of Lithuania's Jewish population was massacred over the three-year German occupation—a more complete destruction than befell any other country affected by the Holocaust. Historians attribute this to the massive collaboration in the genocide by the non-Jewish local paramilitaries, though the reasons for this collaboration are still debated. The Holocaust resulted in the largest-ever loss of life in so short a period of time in the history of Lithuania.The events that took place in the western regions of the USSR occupied by Nazi Germany in the first weeks after the German invasion, including Lithuania, marked the sharp intensification of the Holocaust.An important component to the Holocaust in Lithuania was that the occupying Nazi German administration fanned antisemitism by blaming the Soviet regime's recent annexation of Lithuania, a year earlier, on the Jewish community. Another significant factor was the large extent to which the Nazis' design drew upon the physical organization, preparation and execution of their orders by local Lithuanian collaborators of the Nazi occupation regime.As of 2020, the topic of the Holocaust in Lithuania and the role played by Lithuanians in the genocide, including several notable Lithuanian nationalists, remains controversial.