The leader of the separatist rebels in the eastern Ukrainian city of Slavyansk, Vyacheslav Ponomaryov holds a press-conference in Slavyansk on April 20, 2014. Pro-Moscow rebels in the east Ukraine town of Slavyansk declared a curfew there Sunday, after a gun battle with unidentified attackers killed two militants. Ponomaryov told reporters that "the curfew comes into effect today". AFP PHOTO / KIRILL KUDRYAVTSEV