I've done it multiple times in base game but i just can't seem to do it in this mod, especially since the Mamluks never accept an alliance because of the 'too many diplo relations' modifier.

It is easy enough to get Muscovy, Poland or Austria to become allies but if they are, the Ottomen never declare on me and every major ally i get with the mod never accept an offensive war, wheras i know the Mamluks would