Of course a country can have a foreign poilicy compatible with Islamic State. That country may cease to exist and become part of the Islamic State, but then the policy will still be compatible.
But then it's no longer a country! See what I did?

As in if Western or European Countries didn't try to manipulate others into doing their bidding, ISIS might be a local Middle Eastern issue and not bother with bombing Europeans. And if values and foreign policy are blended, what values do arms deals with Saudi Arabia represent?
These groups are mostly local issues, but as history shows the East Med is "local" for Europe.

Don't think in terms of "manipulation" and "bidding"; these aren't one-sided relationships.

Saudis get arms so that they can defend themselves against the militants they have bought and paid for, and also equipped with those arms. A complicated relationship for all parties to be sure.