A US delegation is in Sudan to discuss regional issues, including the country's border crisis with Ethiopia.
Fighting between Ethiopia's government and TPLF forces in the Tigray region broke out in November, killing thousands of people and displacing more than a million others.
Delegation members have met some of the refugees who have fled across the border to escape the conflict in neighbouring Tigray.

Al Jazeera's Hiba Morgan reports from Um Rakuba camp in Sudan's Gadarif state.

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