Russia does not observe any actions to deliberately delay the exchange of prisoners of war and bodies of those killed by the participants in the Nagorno-Karabakh conflict, however, there are objective difficulties for progress in this process, Russian FM Sergei Lavrov told a briefing Tuesday.

He noted that given the terrain and the way the hostilities developed in Karabakh, it was very difficult to deal with these issues immediately after they stopped, especially in the absence of clear lists of those who are considered missing, TASS reported.