Somalia: African Union, beyond passive peacekeeping?

Some 3,000 Ugandan soldiers from the African Union (AU) mission have arrived in Somalia to help government forces battle al-Shabab, a group trying to overthrow Somalia's weak Transitional Federal Government (TFG) and impose Islamic law. This comes after the mandate of the AU mission was expanded from peacekeeping to enforcement of peace last month, meaning that AU soldiers can now lead the onslaught against al-Shabab.