Is the husband's acceptance of separation and his acceptance of mediation concerning the terms of separation considered a legitimate divorce that entails the consequences of divorce, and does the 'iddah begin from the date of his agreement, and what is the duration of the 'iddah for the woman who seeks khul'?

The mere acceptance and agreement of the husband to divorce or khul' are not sufficient for them to take effect. Rather, the husband must pronounce them, or a ruling of divorce or khul' must be issued by a Sharia (definition) judge. The waiting period ('iddah (definition)) begins from the moment of pronouncing the divorce or khul', or from the issuance of the final judicial ruling. The 'iddah for a woman who has sought khul' is three menstrual cycles according to the majority of scholars, and one menstrual cycle according to some scholars.