A decades-long territorial dispute between Armenia and Azerbaijan, over the Nagorno-Karabakh region has flared up. Now nearly the entire ethnic Armenian population living there has fled.
The United Nations has sent its first mission to the territory in about 30 years to assess the humanitarian situation. Azerbaijan has been accused of ethnic cleansing - which it denies.
Alex Rhodes, from the What in the World team, takes us through the history of the region and runs through what’s been happening in recent weeks.
Email: whatintheworld@bbc.co.uk
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Presenter: Hannah Gelbart and Alex Rhodes
Producers: Emily Horler and Benita Barden
Editors: Verity Wilde and Simon Peeks
