REUTERS

"Svitlodarsk and Luhanske are the most important places of the barrier line, which includes the reservoirs and the Luhan river, with its banks [that are] inaccessible for militant tanks,” Fedychev said.

“Therefore, we have an operational necessity to control these places. Now they are under the control of the Ukrainian armed forces," he said.

The Ukrainian army withdrew to Svitlodarsk and Luhanske after it retreated from the town of Debaltseve, to the southeast. The town had been under siege by Russian militants for weeks, and the militants continued to attack the town even after signing a ceasefire agreement on February 12.

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Ukrainian troops started to retreat from the town on February 18. The town had been virtually inaccessible since February 5, according to some reports, when militants took control of part of the main road linking Luhanske and Debaltseve.