When Siad Barre seized power in Mogadishu in 1969, he thwarted attempts at an understanding between Ethiopia and Somalia. He pledged to renew efforts to establish Greater Somalia that would encompass about one-third of Ethiopia's territory. Encouraged by the breakdown of authority in Addis Ababa after the 1974 overthrow of Haile Selassie, Somalia provided equipment, as well as moral and organizational support to insurgent movements in the Ogaden and southern Ethiopia.