Suarez, << SWAHR ehz or SWAH rayth, >> Francisco (1548-1617), was a Spanish theologian and a founder of the philosophy of international law. In his famous treatise On Laws, he attacked the theory of the divine right of kings and insisted on the need for the consent of the people in a just political order. Suarez saw that the medieval idea of a Christian empire was no longer possible with the emergence of self-governing national monarchies. Suarez was born in Granada. He became a Jesuit in 1564.