Right Sector fighters should cancel their vacations, and commanders should start full mobilization, one of the extremist group's leaders announced.
"I am addressing the fighters of the Ukrainian Volunteer Corps of the RS [Right Sector]. The enemy has renewed activities.
1. Those on vacation or those who went home during the lull on the front must prepare to return to their combat units.
2. The commanders of reserve battalions must restart full-scale mobilization and prepare people to go to their combat units or the Training Center.
3. Those responsible for material support must intensify their work.
4. We will wage war ignoring the truce devotees.
Everything for the war, everything for the Victory! We will defeat both the external and internal foes! Volunteers are the backbone of the Ukrainian nation, remember this. Glory to Ukraine!" — Andriy Stempitskiy's post reads.
The situation in Eastern Ukraine has significantly deteriorated in recent days, with Kiev forces intensifying the shelling of Donbass residential areas.
Petro Poroshenko's aide said earlier on Thursday that at least five Ukrainian servicemen were killed and 39 injured "during the last 24 hours".
The Right Sector is a voluntary paramilitary alliance of Ukrainian nationalists notorious for numerous atrocities such as the Odessa massacre on May 2, 2014.