Kiev

A man rides a horse cart, as smoke from a fuel depot fire billows in the background, in Vasylkiv...A man rides a horse cart, as smoke from a fuel depot fire billows in the background, in Vasylkiv, Kiev region, Ukraine, June 9, 2015. Emergency services are battling to prevent the spread of a deadly fuel depot fire outside Kiev, the head of the emergency services said on Tuesday, and three firemen were reported missing after the blaze triggered a powerful explosion. The fire burned overnight and by morning had spread to at least 16 tanks, most of them storing petrol, sending a huge pall of smoke over the area surrounding the depot near Vasylkiv, 30 km (19 miles) from Kiev. REUTERS/Valentyn Ogirenko

Valentyn Ogirenko/Reuters

A man rides a horse cart, as smoke from a fuel depot fire billows in the background, in Vasylkiv, Kiev region, Ukraine. Emergency services are battling to prevent the spread of a deadly fuel depot fire outside Kiev, the head of the emergency services said on Tuesday, and three firemen were reported missing after the blaze triggered a powerful explosion 

A worker installing a wreath of poppies as a red peak and ribbon on top of the 102-meter Motherland Monument in Kiev, Ukraine, on Friday, May 8, 2015, to mark the anniversary of the defeat of the Nazis in WWII. Ukraine is for the first time this year marking two holidays for the WWII victory anniversary, with a day of remembrance on May 8 and Victory Day on May 9. (AP Photo/Efrem Lukatsky)

Efrem Lukatsky/AP

A worker installing a wreath of poppies as a red peak and ribbon on top of the 102-metre Motherland Monument in Kiev, Ukraine, to mark the anniversary of the defeat of the Nazis in the second world war. 

A priest sprinkles holy water on members of the Organization of Ukrainian Nationalists (OUN) before they depart to the frontline in eastern Ukraine, in central Kiev...A priest sprinkles holy water on members of the Organization of Ukrainian Nationalists (OUN) before they depart to the frontline in eastern Ukraine, in central Kiev, March 17, 2015. Three Ukrainian servicemen have been killed in fighting in the east of Ukraine in the past 24 hours despite a ceasefire agreement with Russian-backed rebels, a Kiev military spokesman said on Tuesday.  REUTERS/Gleb Garanich  (UKRAINE - Tags: POLITICS CIVIL UNREST CONFLICT RELIGION)

Gleb Garanich/Reuters

A priest in central Kiev sprinkles holy water on members of the Organization of Ukrainian Nationalists before they depart to the frontline in eastern Ukraine. Three Ukrainian servicemen have been killed in fighting in the east of Ukraine in the past 24 hours despite a ceasefire agreement with Russian-backed rebels, a Kiev military spokesman said on Tuesday. 

Ukrainian servicemen are seen near a billboard with social advertising in central Kiev, January 15, 2015. Ukraine's parliament voted on Thursday to refresh its front-line forces and resume partial conscription after a top security official warned that Russian forces backing separatist rebels had sharply increased military activity in the east.

Gleb Garanich/Reuters

Ukrainian servicemen are seen near a billboard with social advertising in central Kiev. Ukraine’s parliament voted on Thursday to refresh its front-line forces and resume partial conscription after a top security official warned that Russian forces backing separatist rebels had sharply increased military activity in the east

Ukrainians fish in the frozen river Dnipro in Kiev, Ukraine, Wednesday, Jan. 14, 2015. Kiev's temperature on Wednesday dropped to 7 C (44 F). (AP Photo/Efrem Lukatsky)

Efrem Lukatsky/AP

Ukrainians fish in the frozen river Dnipro in Kiev, Ukraine

A woman reacts as she walks in between photos of anti-Yanukovich protesters killed during clashes, during a commemoration ceremony for them in Kiev...A woman reacts as she walks in between photos of anti-Yanukovich protesters killed during clashes, during a commemoration ceremony for them in Kiev November 21, 2014. Ukrainians marked the first anniversary of Ukrainian pro-European Union (EU) mass protests which caused a change in the country's leadership and brought Ukraine closer to the EU.

Gleb Garanich/Reuters

A woman reacts as she walks inbetween photos of anti-Yanukovich protesters killed during clashes in Kiev. Ukrainians marked the first anniversary of the country’s pro-EU mass protests that caused the removal of former president Viktor Yanukovich

A young Ukrainian cadet warms his hands, after an oath-taking ceremony and a prayer service at Kiev Pechersk Lavra monastery in Kiev, Ukraine, 14  November 2014. About 100 young Ukrainian cadets took part in an oath-taking ceremony, including 10 cadets from the ATO area, local media report.

Tatyana Zenkovich/EPA

A young Ukrainian cadet warms his hands, after an oath-taking ceremony and a prayer service at Kiev Pechersk Lavra monastery in Kiev, Ukraine

Models wait backstage during Ukrainian Fashion Week in Kiev

Gleb Garanich/Reuters

Models wait backstage during Ukrainian Fashion Week in Kiev

A woman embraces her friend, a volunteer of Ukrainian self-defence battalion "Azov", after he returned from the front line in Eastern regions of Ukraine, in Kiev...A woman embraces her friend, a volunteer of Ukrainian self-defence battalion "Azov", after he returned from the front line in Eastern regions of Ukraine, in Kiev September 15, 2014.

Valentyn Ogirenko/Reuters

A woman embraces her friend, a volunteer of Ukrainian self-defence battalion “Azov”, after he returned from the front line in Eastern regions of Ukraine, in Kiev on Monday

Sich special volonteer battalion members stand on August 26, 2014 during an oath-taking and farewell ceremony in Kiev. The battalion is leaving the Ukrainian capital to take part in anti-terrorists operation (ATO) in the east of the country. Kiev's security services on August 26 released a video purporting to show captured 10 Russian soldiers captured on its territory who a Moscow military source claimed had crossed into Ukraine "by accident."

Sergei Supinsky/AFP

Sich special volunteer battalion members stand on Tuesday during an oath-taking and farewell ceremony in Kiev. The battalion is leaving the Ukrainian capital to take part in anti-terrorists operation (ATO) in the east of the country

Clergymen attend a service near the Kiev Pechersk Lavra monastery on the day of the election of the Primate of the Ukrainian Orthodox Church of the Moscow Patriarchate, in Kiev August 13, 2014. Former Primate of the Ukrainian Orthodox Church of the Moscow Patriarchate, Metropolitan Vladimir of Kiev and All Ukraine died on July 5. REUTERS/Gleb Garanich (UKRAINE - Tags: RELIGION TPX IMAGES OF THE DAY)

Gleb Garanich /Reuters)

Clergymen attend a service near the Kiev Pechersk Lavra monastery on the day of the election of the Primate of the Ukrainian Orthodox Church of the Moscow Patriarchate, in Kiev on Wednesday

A Maidan activist burns tires during a protest against Ukrainian authorities trying to clean the main Kiev's street of Khreschatyk near the Independence square in downtown Kiev, Ukraine, 07 August 2014. Maidan activists declared they will not allow to hold a military parade in downtown Kiev during celebration of the Ukrainian Independence Day on 24 August 2014.  EPA/SERGEY DOLZHENKO

Sergey Dolzhenko/EPA

A Maidan activist burns tyres during a protest against the Ukrainian authorities trying to clean the main Kiev street of Khreschatyk, near Independence Square, in the city centre on Thursday

Deputies of the majority fight with the ...Deputies of the majority fight with the deputies of Regions Party, party of former Ukrainian President Viktor Yanukovych, during the debates in the parliament in Kiev on July 22, 2014. The parliament adopted the presidential decree on partial mobilization. AFP PHOTO/ STRSTR/AFP/Getty Images

STR/AFP/Getty

Deputies of the majority fight with the deputies of Regions Party, party of former Ukrainian President Viktor Yanukovich, during the debates in the parliament in Kiev. The parliament adopted the presidential decree on partial mobilisation. 

A boy bangs a spoon on a plate as part of a protest rally demanding restoration of the state programme "affordable housing", in front soldiers of volunteer battalion "Donbass" guarding the Ukrainian parliament building during a session in Kiev on July 3, 2014,  to prevent "planned terrorist acts", according to battalion commander Semion Semionchenko. Former policeman who headed Ukraine's VIP bodyguard service, Valeriy Geletey, was nominated by Ukrainain President Petro Poroshenko and confirmed by parliament as the country's new Defence minister on July 3, making him the pointman in the battle against pro-Kremlin seperatists in the east.

Sergei Supinnsky/AFP

Protesters demand restoration of the state programme of affordable housing, in front of volunteer soldiers of battalion Donbass, as they guard the Ukrainian parliament building in Kiev on Thursday to prevent “planned terrorist acts”, according to battalion commander Semion Semionchenko

People take part in a mass prayer for peace in downtown Kiev on June 19, 2014. Ukraine's new Western-backed president announced plans on JUne 18 to order a unilateral ceasefire in the separatist east that could help end a bloody pro-Russian insurgency and avert his ex-Soviet country's breakup.

Genya Savilov/AFP

People take part in a mass prayer for peace in downtown Kiev on Thursday

People take part in a rally to press demands for parliament to be dissolved and early elections outside the assembly in Kiev June 17, 2014.

Gleb Garanich/Reuters

People take part in a rally outside parliament in Kiev on Tuesday. The protesters wanted parliament to be dissolved and early elections to be held.

Ukrainians remove a barricade near Independence Square in Kiev, Ukraine, 10 April 2014. Pro-Russian protesters continued to hold seized Ukrainian administrative buildings in Donetsk and Lugansk, which were occupied by them some days ago.

Sergey Dolzhenko/EPA

Ukrainians remove a barricade near Independence Square in Kiev, Ukraine on Thursday

Deputies clash during a session of the parliament in Kiev

Valentyn Ogirenko/Reuters

Deputies clash during a session of the parliament in Kiev, Ukraine, on Tuesday

Ukrainian soldiers perform military exercises at a military training ground outside Kiev, Ukraine, Monday, March 31, 2014. Ukrainian Acting Foreign Minister Andriy Deshchytsa has said that the new Ukrainian government is not planning to lead Ukraine into NATO. (AP Photo/Efrem Lukatsky)

Efrem Lukatsky/AP

Ukrainian soldiers perform military exercises at a military training ground outside Kiev, Ukraine. Ukrainian Acting Foreign Minister Andriy Deshchytsa has said that the new Ukrainian government is not planning to lead Ukraine into NATO. 

Members of a military special unit stand guard in front of a Ukrainian parliament building in Kiev...Members of a military special unit stand guard in front of a Ukrainian parliament building in Kiev March 17, 2014. Ukraine's parliament, seeking to boost the country's military force in the face of Russia's takeover of the Crimea peninsula, endorsed a presidential decree on Monday to carry out a partial mobilisation involving 40,000 reservists.  REUTERS/Maks Levin

Maks Levin/Reuters

Members of a military special unit stand guard in front of the Ukrainian parliament building in Kiev on Monday. Ukraine‘s parliament, seeking to boost the country’s military force in the face of Russia’s takeover of the Crimea peninsula, endorsed a presidential decree on Monday to carry out a partial mobilisation involving 40,000 reservists