Jewish dissident Josef Begun reiterated that he will leave the Soviet Union for Israel when the family of his son Boris, 23, receives permission to emigrate. Begun, 54, was reacting to an article in the Soviet government newspaper Izvestia alleging that despite a 16-year battle to leave, he had decided against emigrating. Izvestia quoted what it said was a taped conversation between Begun and an Israeli who attended the Moscow Book Fair last month. It said the Israeli urged Begun to continue educating Jewish youth in the Soviet Union. But Begun said the emigration board has not authorized his son to leave because his wife's parents have not submitted a document stating that the two have no financial obligations.