I think by now most of their camps and storage facilities are known. The issue is rather a legal one: nobody can simply wage war against a group operating in various countries, violating international law. But each of the affected countries can't do it on their own anymore. Guerrilla situation in the grey zone.
"Australia will send 600 military personnel, including SAS troops, and eight FA18 Super Hornets to the United Arab Emirates in preparation for a dramatic escalation of the multinational effort to contain the Islamic State that now holds parts of northern Iraq and Syria."