THE nation's most senior -national security official has warned Islamic State wants to "destroy us". 
ASIO chief Duncan Lewis last night said Islamic butchers would continue to look at ways to attack Australia but urged people not to let it impact the way we live our lives.
"They want to attack us, they want to destroy us," he told the ABC last night. "We must be enormously resolute in the way we approach this. This is an act of criminality. This is a grotesque distortion of one of the world's great -religions to provide an excuse to cover their actions." The chief spy said federal authorities had 400 active -investigations under way and had stopped six potential -attacks over the last year. He said the six foiled attacks and three attacks represented 66 per cent of all terror incidents in the last 15 years.
Mr Lewis said he could not guarantee ASIO and the AFP would foil every attack but said Australians should have confidence in their security agencies. He said Islamic State objected to western society"These people are anti Western. Australia has been a terrorist target long before we became engaged in the Middle East," he said. "We are as a society, objectionable to them."