 Likewise the 1968 attack on the US Consulate in Melbourne was also regarded to be an isolated incident protesting the US involvement in Vietnam.The two exceptions to this state of affairs would be the assassination attempt on the Duke of Edinburgh in 1868 by an Irish Nationalist named O'Farrell, who was later executed for his crime, and an attack in Broken Hill in 1915 by Afghan supporters of the Sultan of Turkey.Although it had known sporadic acts through its history, and examples of modern terrorism for almost a decade, Australia did not introduce terrorism specific laws into Parliament until the late 1970s.