After receiving evidence that al-Shabab is planning attacks in the country, Ethiopia has put its security forces on heightened alert, say officials.
Young people in Somalia have known only war and little prospect of getting a job.
A drone attack on Somalia's al-Shabab has left a top suicide bomb-maker for the rebel group dead, say government officials.
The Kenyan government says it believes it has recovered the remains of the four gunmen involved in the Westgate Mall shootings.
Uganda has been on high alert over fears of an attack similar to the bloody mall assault by Somalia's al-Shabab fighters in neighbouring Kenya.
The African Union has backed a call to boost by about a third the number of troops in an African peacekeeping force in Somalia.
The Navy SEALS' stealthy assault on the militant group in a Somali village has gone awry.
Barack Obama says that the US would focus its attack on al-Qaeda-linked groups in Africa but had no intention of going to war on the continent.
A failed raid in Somalia and anger at the capture of an al-Qaeda leader in Libya has focused on the US's problems in its fight against militants.
Al-Shabab says "Western" forces attacked a house in one of its coastal bases in the town of Barawe under the cover of dark, killing one rebel fighter.
The BBC's Peter Taylor reports on the Kenyan recruitment network, which delivers would-be jihadists to be used on missions by al-Shabab in Somalia.
Reporting on the terror attack on Westgate Mall in Kenya was a blur of smoke, terror and confusion, writes Robyn Kriel.
Militant group al-Shabab, who have claimed responsibility for the attack on Westgate mall, have threatened to step up militant attacks against Kenya.
Al-Shabab's insistence that no woman joined them in the Nairobi mall attack may dismiss speculation that 'White Widow' Samantha Lewthwaite took part.
Another arrest has been made by Kenya over last week's Westgate Mall attack in Nairobi that left 67 people dead.
Home affairs says Samantha Lewthwaite's passport was "cancelled" in 2011 as fear grows in Jo'burg's "Little Mogadishu".
The new era of global conflict proves that it is not sufficient for the left to leave religion to itself, says Paul Trewhela.
But the attack on the Westgate mall is likely to rebound on tourism, the country’s Achilles heel.
Britain's top diplomat in Kenya has said the arrest of a Briton following the Westgate mall shooting is not significant for investigations.
Percy Zvomuya speaks to Nigerian-American writer Teju Cole, who was in South Africa for the Open Book Festival.