Representatives of individual districts of the Donetsk and Luhansk regions have again thwarted a Skype conference of the Trilateral Contact Group scheduled for October 3 to address compliance with the truce in eastern Ukraine. This was disclosed by Iryna Herashchenko , representing Ukraine in the humanitarian group for Donbas.She urged all parties participating in negotiating process to immediately respond to the situation including the reaction of the Normandy Four .