Violence is causing major problems in a part of West Africa. Hundreds of people have been killed in the fighting in Burkina Faso.

That is causing a major food crisis, affecting nearly 1.5 million people.

The World Food Programme is now warning of what it calls an "unprecedented humanitarian emergency" because of hunger and instability in the region.

Al Jazeera's Catherine Soi reports from northern Burkina Faso on how farmers are abandoning their crops to escape the violence.

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