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*** A warning, this film contains language and scenes that some people may find upsetting. ***

Fighting between Armenia and Azerbaijan, two former Soviet republics in the Caucasus region, has flared up in recent days. But what is behind the current outbreak and who stands to gain?

The two countries are clashing over the disputed Nagorno-Karabakh enclave, which is officially part of Azerbaijan but is run by ethnic Armenians.

The current fighting is the worst seen in decades, and both sides have blamed each other for the violence.

Armenia and Azerbaijan went to war over the region in 1988-94 and eventually declared a ceasefire. But they have never reached a settlement over the dispute.

Newsnight’s diplomatic Editor Mark Urban reports.