JOHANNESBURG, South Africa -- The signs are ominous: A terrorist group in northern Nigeria claims to have trained with al-Qaida-linked militants in Somalia, and vows to launch international attacks after a deadly bombing last month of the U.N. headquarters in Nigeria's capital, Abuja.
The head of U.S. Africa Command, Gen. Carter F. Ham, has warned of the threat of a pan-African al-Qaida-linked terrorism network capable of endangering Western interests across the continent.
And Nigerian intelligence experts have suggested that another al-Qaida affiliate in the region, al-Qaida in the Islamic Maghreb, or AQIM, may be supplying personnel, weapons and training to the Nigerian group, Boko Haram.