City had served as capital of caliphate for years.
Hermit nation wants to create reliable strike force before meetings.
Over the years al-Shabab has grown from mounting low-level, symbolic assaults to staging complex attacks at home and abroad.
Death toll expected to keep rising after bomb rocks Mogadishu.
Opposition supporters were calling for reform after election.
Opposition says the count is fraudulent, noting it contradicts polling.
President unveiled a tough new policy toward the "rogue regime in Iran."
American woman, Canadian husband, 3 young children spent years in captivity.
Police are asking for witnesses of Saturday's incident.
The museum said on Twitter it was working with police after "a serious incident.”