Experts , officials warn of growing threat from Somali militant group . The U.S. government has warned that the Somalia-based al Shabaab is becoming more violent and capable in recent years as it expands its reach into neighboring countries such as Kenya and Uganda. Kenya says danger is to region and world despite threats on Nairobi .
Experts , officials warn of growing threat from Somali militant group . Al-Shabaab is one of strongest Islamic militias battling for Mogadishu . Kenya says danger is to region and world despite threats on Nairobi .