Armenia and Azerbaijan accuse each other of moving troops to the border.
The chaotic and rapid collapse of the Soviet Union more than 30 years ago left complex and unresolved political conflicts.
One of them, between Azerbaijan and Armenia in the Nagorno-Karabakh region, has killed or injured tens of thousands of people in numerous conflicts and outbreaks of violence since then.
And after a brief but bloody war less than three years ago, tensions are escalating again.
So why is this happening now – and where could it lead?
And what role do Russia, the United States, the EU and Turkey play in this conflict?
Presenter: Imran Khan
Farid Shafiyev – President of the Center for the Analysis of International Relations and former Ambassador of Azerbaijan to Canada
Anna Ohanyan – Professor of International Relations at Stonehill College and author of The Neighborhood Effect: The Imperial Roots of Regional Fracture in Eurasia
Ben Aris – Founder and Editor of bne IntelliNews, a business media company focused on emerging markets. Ben is also the former Moscow bureau chief of The Daily Telegraph.