SYDNEY — Australia’s highest court will hear an attempt by the government to extradite an elderly man to Hungary, where he is accused of murdering a Jewish teenager during World War II. Charles Zentai is suspected of being one of three Nazi-backed Hungarian soldiers who tortured and murdered 18-year-old Peter Balazs in 1944 for not wearing a yellow Star. Zentai, in Australia for 60 years, was approved for extradition but successfully appealed the ruling on the basis that a “war crime” was not an extraditable offence.