Ethiopia's government is expected to begin peace talks on Tuesday in Tanzania with rebels from the Oromiya region, where escalating violence has claimed hundreds of lives in recent years.
Rebel groups in Oromiya, which is the biggest of Ethiopia's 11 regions and surrounds the capital Addis Ababa, have battled the federal government for decades.
They have accused the government of marginalising and neglecting Oromos, the country's largest ethnic group.
