If no one minds, a flag of a Judeo-Norse state ruling the middle east would be pretty great.
Not the tidiest finish, but would this be any good?
Blue & Green representing Judaism and Islam (I made the assumption its a modern-day state rather than centuries ago - apologies if i was wrong). The nordic cross is obvious, with the valknut representing the mixture of the three cultures. Also added the states possible name - Serkland _ as there were references in the sagas to the middle east being called this.