The OSCE special representative is working on agreeing the criteria for increasing the number of observers of the office of the OSCE CiO Personal Representative Andrzej Kasprzyk, Sergey Lavrov, the Russian foreign minister, announced during the press conference in Vienna at the meeting of OSCE Ministerial Council, Armenpress informs. “The issue of increasing the number of OSCE observers at the line of contact in Nagorno-Karabakh was discussed in Vienna in 2016 during the meeting of the presidents of Armenia and Azerbaijan, attended by the foreign ministers of Russia, the United States and France. Later the question was raised in Saint Petersburg in June, with participation of President Vladimir Putin. Then the agreement over principles has been handed to OSCE, and I know that the OSCE Special Representative is working on agreeing the criteria of its implementation,” Lavrov stated. Earlier, speaking about the settlement of the conflict over Nagorno-Karabakh, he underlined that the meeting between the presidents of Armenia and Azerbaijan Serzh Sargsyan and Ilham Aliyev in 2017 is a positive step in the process of normalization of the conflict over Nagorno-Karabakh.