The situation in Donbas has significantly deteriorated over the past day, as the militants have violated the truce throughout the contact line.Ukrainian army positions came under 15 attacks.The hostiles shelled Ukrainian army strongholds by use of grenade launchers, small arms and anti-aircraft guns near Avdiyivka, and grenade launchers and infantry combat vehicle weapons were fired near Luhanske.Ukrainian positions came under attack near Shyrokyne and Starohnativka in the Mariupol area, where the hostiles were using various kinds of grenade launchers, anti-tank missile systems and infantry combat vehicle weapons.In the Luhansk sector, the hostiles fired small arms on Ukrainian soldiers stationed near Novooleksandrivka.