It's really confusing, these days, to understand who is or is not a terrorist.Sure, it seems easy. Al Qaeda and the Islamic State (ISIL) -- regardless of what relationship we believe the two groups have -- are terrorist groups, inflicting gruesome casualties on civilians. Both are dangerous precisely because in well-trained small groups, they have the ability to inflict massive casualties.But many of the characteristics the press uses to demonize ISIL, most notably its practice of beheading people it executes, but also its ruthless policing of radical Islam, are also true of a chief American ally in the region, Saudi Arabia.