Australia’s domestic intelligence agency ASIO has raised the country’s terrorism threat level to “probable” amid a rise in extremism, the agency’s director general said on Monday. ASIO boss Mike Burgess said that Australia’s security environment was more volatile and more unpredictable and the decision was not “taken quickly or easily.” “More Australians are embracing a more diverse range of extreme ideologies, and more Australians are willing to use violence to advance their cause,” he said in a statement. “Politically motivated violence now joins espionage and foreign interference as our pri…