"They [OSCE monitors] have not tried going there yet," Vladislav Deinego told RIA Novosti.
"Today, they submitted an application for February 22, and.. we will guarantee their safety, as we already fully control the situation there, and they will be able to travel there without any obstacles," he added.
The town of Debaltseve, a key transport hub located between the two breakaway regions of Donetsk and Luhansk, has seen heavy fighting between Kiev-led troops and local militia. Thousands of Ukrainian troops have been encircled in the town in recent weeks.
A renewed ceasefire agreement between Kiev and eastern Ukrainian militia, outlined during a meeting of the leaders of Ukraine, Russia, France and Germany last week, entered into force over the weekend.
