They also want Israel and Crimea, so it's more of a wishlist map than a serious one. Spain is on there because they obviously think the Moors should still be running the place.
It is a bit of a wishlist - you'd think they'd cut the world up on ethnic/religious borders really, maybe swallowing up the odd holy site here and there - but no, they've just used the paint-fill tool on MS Paint to colour bits around the med black. Lazy really.
Ihe problems in the Middle East are largely our fault. After the First World War Britain drew arbitary boundaries through the remains of the Ottoman Empire with no regard to the religious sects or ethnic backgrounds of the people of the region. It's been a mess ever since. Scroll down to 'Three Conflicting Agreements' here...
// Unlike numerous waves of crusaders who merely handed out leaflets and invited the Muslims to coffee mornings at the vicarage //
I think that did actually happen in the little known prequel to the first crusade barks. It's not very well documented because all the participants got their heads chopped off by muslims about 10 miles south of Calais.