Armenia and Azerbaijan accuse each other  of attacking civilian areas as  the deadliest fighting in the South Caucasus region for more than 25 years continues.

NATO chief Jens Stoltenberg added his voice to calls for an immediate end to the clashes over Nagorno-Karabakh, a mountain enclave that belongs to Azerbaijan under international law but is populated and governed by ethnic Armenians.

But prospects for a ceasefire appeared remote after the fighting intensified over the weekend and following uncompromising comments by Azeri President Ilham Aliyev.

KAN's Mark Weiss spoke with South Caucasus expert  Brenda Shaffer, formerly a professor at Haifa University and now at the US Navy Postgraduate University.