SYDNEY (AP) — Australia's prime minister on Monday dismissed criticism of his decision to make the husband of Queen Elizabeth II an Australian knight, saying Prince Philip has a long history of service Down Under. Prime Minister Tony Abbott's announcement that the Duke of Edinburgh would be awarded Australia's highest honor came on Australia's national holiday, prompting some to question the wisdom of knighting a British royal on a day meant to commemorate Australians. Former Defense Force chief Angus Houston, who has overseen the search for missing Malaysia Airlines Flight 370 off Australia's west coast, was also knighted on Monday.