Here's a video of several of the alleged Aussie Cafe Lindt hostages sharing the demands of Sheikh Man Haron Monis: They claimed all he wanted was an ISIS flag, a phone call from Prime Minister Tony Abbott on live media, and that all media outlets should be informed that "this is an attack on Australia by the Islamic State." The video is similar to the Islamic State propaganda videos of John Cantlie, the journalist being held hostage in Syria, slamming the U.K. government for not giving in to the demands of the terrorists.
Here's some background info on Monis. And here.
So the man was very unstable, but he still carried out the attack in the name of religion, and wanted his affiliation to ISIS known. Exactly what ISIS has been calling for.
With his checkered, anti-Australia, violent background, why was he not deported back to Iran years ago?