DAWIT ENDESHAW and GIULIA PARAVICINI AT least 12 people were killed in the Metakal zone of Ethiopia's Benishangul-Gumuz region, according to regional government spokesman Melese Beyene. The killings, which happened on Monday night, followed two attacks in the same zone last month when 45 people lost their lives, and Prime Minister Abiy Ahmed's government is faced with rising insecurity in many parts of the country. The killings started as revenge following the assassination of the brother of a local official, the spokesman said. Victims included women and children as young as six months, and many were slaughtered in their homes,…