The most important issue concerning the situation in Nagorno-Karabakh is to ensure that Azerbaijan returns of all the prisoners of war and detained persons, Armenian Foreign Minister Ara Aivazian said at a meeting with his Russian counterpart Sergei Lavrov on Thursday, May 6.

According to him, the matter needs to be resolved as soon as possible, given the extensive evidence of massive violations of international humanitarian law.

19 of the hundreds of Armenian civilians and servicemen, who were taken captive by Azerbaijan during and after military hostilities in Artsakh (Nagorno-Karabakh), have been tortured and killed.

Aivazian stressed the importance of creating conditions for the resumption of the peace process under the auspices of the "troika" of the OSCE Minsk Group co-chairs, represented by Russia, France and the United States.