anyone saying ISIS isn't Islam has no idea what Islam is.
Islam is fully applying the commands of Quran and the Prophet.
either you like it or not, either the west and non-Muslims not satisfied with it.
The only country that apply the Islamic rules completely is ISIS, towards their enemies and their citizens.
You will probably say that Islam is a religion of peace; and it is! but it stop being a 100% peaceful when your enemies cross the line.