I call to your attention a useful and well-illustrated report on Iran's activity in East Africa and the Horn dated July 29, 2009, by the Intelligence and Terrorism Information Center, an Israeli non-governmental organization.
You can find the report, which is titled "Iran’s activity in East Africa, the gateway to the Middle East and the African continent" (in PDF format)
here.
Here is part one of the overview:
Africa is an important target for Iranian President Ahmadinejad’s ambitious foreign policy. In recent months Iran has shown increasing interest in Africa, following its efforts to establish its presence in Latin America, the United States’ back yard. In February 2009 Ahmadinejad visited several East African countries (including the Comoro Islands, Djibouti and Kenya). During his visits he stressed Iran’s willingness to help African countries strengthen their independence and to form a united front to oppose “Western oppression.” Various Iranian figures repeatedly spoke of the future of Iran’s political relations with African countries and the many economic and political opportunities those relations might present.
