** FILE ** This file picture of 1956 shows the WWII war criminal Josef Mengele. The Israeli agents who kidnapped Nazi mastermind Adolf Eichmann from Argentina in 1960 knowingly let the notorious death camp doctor Josef Mengele get away, one of the operatives said Tuesday, Sept. 2, 2008. Eichmann played a key role in planning the mass murder of Jews during World War II and was hanged in Israel. Mengele was an infamous Nazi doctor at the Auschwitz death camp who carried out horrific medical experiments on prisoners. He was never captured and died in 1979. (AP Photo, file)