At least 140 villagers killed by suspected herders in north-central Nigeria

<p>At least 140 people were killed over the weekend in Nigeria's central Plateau state. The attacks are believed to be linked to the country's herder-farmer crisis. Throughout the week we'll be looking at the major events of this past year on the continent. Today, we'll be speaking to Paul Melly from Chatham House about the year in African Politics. And we'll take a look at how northafrican craftsmen are fighting to pass down the ancestral art of metal engraving to the next generation.</p>