At the San Remo Conference (19–26 April 1920) the Allied Supreme Council granted the mandates for Palestine and Mesopotamia to Britain without precisely defining the boundaries of the mandated territories.[5][6] Although part of the land east of the Jordan had been part of the Syrian administrative unit under the Ottomans, it was excluded from the French Mandate at the San Remo conference, "on the grounds that it was part of Palestine."[7] That said, the 1920 agreement contained Article 25, which created provision for the possible later exclusion of land east of the Jordan from the Balfour Declaration.