Complex sentence: While Muslim Kuwaiti male citizens are allowed to transmit their citizenship to both their spouses and descendants, Christian Kuwaiti males are only allowed to transmit their citizenship to their descendants, and not to their spouses.
Split into simpler sentences: While Muslim Kuwaiti male citizens are allowed to transmit their citizenship to both their spouses and descendants, Christian Kuwaiti males are only allowed to. They can only transmit their citizenship to their descendants, but not to their spouses.