First, Second, and Third Lines of Defence Constructed at ATO Border - ATO Press Center. PHOTO

This was announced by the ATO press center, Censor.NET reports.

"Under the President Petro Poroshenko decree, the first, second, and third lines of defense are being constructed," the message reads.

Read also: Russia Wants no Peace. We Need to Liberate Occupied Donbas - Turchynov