treaty obligationsThere's more to these things than simple one line explanations.
Oh yes, there is much more than that...how about simple fanatical Muslim hatred for Christians who just won't go away. Muslim Turks as befits their penchant for violence and destruction terrorize those few Christians who are left and prevent the opening of the ancient theological school of halki. They invade Cyprus and loot and rape and butcher thousands of Christians there. Busy vicious little Muslim beavers those Turks are...