Armed men drive an armoured personnel carrier in Slaviansk
Armed men, wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, drive an armoured personnel carrier in Slaviansk April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
Armed men drive an armoured personnel carrier in Slaviansk
Armed men, wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, drive an armoured personnel carrier in Slaviansk, April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
Armed men pass by barricades outside the mayor's office in Slaviansk
Armed men, who are wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, pass by barricades outside the mayor's office in Slaviansk April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
Armed men drive an armoured personnel carrier in Slaviansk
Armed men, wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, drive an armoured personnel carrier in Slaviansk April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
Armed men pass by barricades outside the mayor's office in Slaviansk
Armed men, who are wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, pass by barricades outside the mayor's office in Slaviansk April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
Armed men pass by barricades outside the mayor's office in Slaviansk
Armed men, who are wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, pass by barricades outside the mayor's office in Slaviansk April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
An armed man stands guard in front of barricades outside the mayor's office in Slaviansk
An armed man, who is wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, stands guard in front of barricades outside the mayor's office in Slaviansk April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY TPX IMAGES OF THE DAY)
Armed men stand guard in front of barricades outside the mayor's office in Slaviansk
Armed men, who are wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, stand guard in front of barricades outside the mayor's office in Slaviansk, April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
An armed man stands guard in front of barricades outside the mayor's office in Slaviansk
An armed man, who is wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, stands guard in front of barricades outside the mayor's office in Slaviansk April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)
An armed man stands guard in front of barricades outside the mayor's office in Slaviansk
An armed man, who is wearing black and orange ribbons of St. George - a symbol widely associated with pro-Russian protests in Ukraine, stands guard in front of barricades outside the mayor's office in Slaviansk April 18, 2014. The self-declared leader of pro-Russian separatists in eastern Ukraine, Denis Pushilin, on Friday said that he did not consider his men to be bound by an agreement between Russia and Ukraine to disarm and vacate occupied buildings. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST MILITARY)