1. Separatist military drills in Ukraine's pro-Russian region

2. Servicemen of the separatist self-proclaimed Lugansk People's Republic train during military exercises at a firing range outside the village of Uspenka near Luhansk, Ukraine. REUTERS/Alexander Ermochenko

3. Servicemen of the separatist self-proclaimed Lugansk People's Republic train during military exercises at a firing range outside the village of Uspenka near Luhansk, Ukraine. REUTERS/Alexander Ermochenko

4. Servicemen of the separatist self-proclaimed Lugansk People's Republic train during military exercises at a firing range outside the village of Uspenka near Luhansk, Ukraine. REUTERS/Alexander Ermochenko

5. Servicemen of the separatist self-proclaimed Lugansk People's Republic train during military exercises at a firing range outside the village of Uspenka near Luhansk, Ukraine. REUTERS/Alexander Ermochenko

6. Servicemen of the separatist self-proclaimed Lugansk People's Republic train during military exercises at a firing range outside the village of Uspenka near Luhansk, Ukraine. REUTERS/Alexander Ermochenko

7. Servicemen of the separatist self-proclaimed Lugansk People's Republic cross a water barrier on rafts during military exercises at a firing range outside the village of Uspenka near Luhansk, Ukraine. REUTERS/Alexander Ermochenko

8. Servicemen of the separatist self-proclaimed Lugansk People's Republic gather at the site of a recent incident, when a vehicle of the Organisation for Security and Cooperation in Europe (OSCE) struck a mine, near the village of Pryshyb outside

9. Servicemen of the separatist self-proclaimed Lugansk People's Republic search for explosives at the site of a recent incident, when a vehicle of the Organisation for Security and Cooperation in Europe (OSCE) struck a mine, near the village of Pryshyb

10. Servicemen of the separatist self-proclaimed Lugansk People's Republic gather at the site of a recent incident, when a vehicle of the Organisation for Security and Cooperation in Europe (OSCE) struck a mine, near the village of Pryshyb outside

11. Servicemen of the separatist self-proclaimed Lugansk People's Republic cross a water barrier on rafts during military exercises at a firing range outside the village of Uspenka near Luhansk, Ukraine. REUTERS/Alexander Ermochenko