This morning the co-chairs of the OSCE Minsk group on Nagorno Karabakh conflict settlement - Nikolai Gribkov (Rissia), Yug Perne (France) and Rudolf Perina (USA) - arrived in Yerevan. The mediators will meet with Armenian President Robert Kocharian and foreign minister Vardan Oskanian September 26. The same day the co-chairs will set off for Nagorno Karabakh on a day's visit. The mediators will stay in Yerevan until September 27, then they will leave for Baku. Let us remind that the OSCE MG co-chairs' latest visit to the region was paid in March 2002.