Russian President Vladimir Putin reacts during a joint press conference with his Cypriot counterpart at the Novo-Ogaryovo residence outside Moscow on February 25, 2015. AFP PHOTO / YURI KADOBNOV

Russian President Vladimir Putin reacts during a joint press conference with his Cypriot counterpart at the Novo-Ogaryovo residence outside Moscow on February 25, 2015. AFP PHOTO / YURI KADOBNOV

Russian President Vladimir Putin attends a joint news conference with Cyprus' President Nicos Anastasiades in the Novo-Ogaryovo residence outside Moscow, Russia, Wednesday, Feb. 25, 2015. Russia and Cyprus have signed a military cooperation agreement that would allow Russian navy ships to make regular port calls on the island. (AP Photo/Yuri Kadobnov, Pool)

Russian President Vladimir Putin speaks during his joint press conference with Hungarian Prime Minister Viktor Orban in the Parliament building in Budapest, Hungary, Tuesday, Feb. 17, 2015. Putin is staying on a one-day working visit in the Hungarian capital. (AP Photo/MTI, Szilard Koszticsak)

Vladiimir Putin visited in Budapest and met with Orb?n Viktor. PUBLICATIONxNOTxINxHUN Putin visited in Budapest and Met With Orb?n Viktor PUBLICATIONxNOTxINxHUN

Vladiimir Putin visited in Budapest and met with Orb?n Viktor. PUBLICATIONxNOTxINxHUN Putin visited in Budapest and Met With Orb?n Viktor PUBLICATIONxNOTxINxHUN

Russian President Vladimir Putin gestures as he speaks to the media after the peace talks in Minsk, Belarus, Thursday, Feb. 12, 2015. Russian President Vladimir Putin on Thursday emerged from marathon Ukraine peace talks by announcing a new cease-fire deal, but questions remained whether Ukraine and the pro-Russian rebels have agreed on its terms. (AP Photo/Alexander Zemlianichenko, pool)

Russian President Vladimir Putin gestures as he speaks to the media after the peace talks in Minsk, Belarus, Thursday, Feb. 12, 2015. Russian President Vladimir Putin on Thursday emerged from marathon Ukraine peace talks by announcing a new cease-fire deal, but questions remained whether Ukraine and the pro-Russian rebels have agreed on its terms.(AP Photo/Alexander Zemlianichenko, pool)

Russian President Vladimir Putin gestures during his annual news conference in Moscow, Russia, Thursday, Dec. 18, 2014. The Russian economy will rebound and the ruble will stabilize, Russian President Vladimir Putin said Thursday at his annual press conference, he also said Ukraine must remain one political entity, voicing hope that the crisis could be solved through peace talks. (AP Photo/Pavel Golovkin)

Russian President Vladimir Putin listens to questions during a press conference after talks with his Serbian counterpart Tomislav Nikolic in Belgrade, Serbia, Thursday, Oct. 16, 2014. Putin arrived on a one-day official visit to Serbia during which he will attend a military parade commemorating the 70th anniversary of Belgrade's liberation from Nazi occupation. (AP Photo/Darko Vojinovic), APTOPIX

TOPSHOTS Russia's President Vladimir Putin reacts during a meeting in the Belarussian capital Minsk on August 26, 2014. Putin and Ukraine's President Petro Poroshenko are meeting in Minsk for key talks on August 26, exchanged a firm handshake before going into what are likely to be difficult talks as fighting raged between pro-Russian rebels and Kiev's troops. AFP PHOTO / KIRILL KUDRYAVTSEV

Russian President Vladimir Putin speaks during a press conference with Finnish President after talks at the Black Sea resort of Sochi, on August 15, 2014. Putin met with his Finnish counterpart for talks expected to cover the crisis in Ukraine as Finland has been one of the EU countries most hurt by rising tensions as well as tit-for-tat sanctions between Moscow and the West over the crisis in Ukraine. AFP PHOTO / POOL / IVAN SEKRETAREV

Russian President Vladimir Putin listens for a question during his and Finnish President Sauli Niinisto news conference after the talks at the residence at the Black Sea resort of Sochi, southern Russia, in Sochi, Russia, Friday, Aug. 15, 2014. Putin met with Niinisto here on Friday to discuss interaction between the two countries, as well as international problems, first of all, the situation in Ukraine, the Kremlin press service reported. (AP Photo/Ivan Sekretarev)

Russian President Vladimir Putin listens to a question during a press conference with his Finnish counterpart after talks at the Black Sea resort of Sochi, on August 15, 2014. Putin met with his Finnish counterpart for talks expected to cover the crisis in Ukraine as Finland has been one of the EU countries most hurt by rising tensions as well as tit-for-tat sanctions between Moscow and the West over the crisis in Ukraine. AFP PHOTO / POOL / IVAN SEKRETAREV

Russian President Vladimir Putin addresses members of Crimea parliament during the meeting in Mria sanatorium about 30 km. (19 miles) from Yalta, Crimea, Thursday, Aug. 14, 2014. A large Russian aid convoy resumed its journey toward Ukraine Thursday, taking a road leading directly toward a border crossing controlled by pro-Russian rebels in the Luhansk region. President Vladimir Putin, who was meeting with lawmakers in the Black Sea region of Crimea that Russia annexed from Ukraine in March, has not yet commented on the convoy but said that his country was doing "all we can to stop bloodshed in Ukraine as soon as possible." (AP Photo/Alexander Zemlianichenko, Pool)

Russian President Vladimir Putin listens to French politician and businessman Philippe de Villiers (unseen) during their meeting at the Livadia Palace outside Yalta, Crimea, on August 14, 2014. De Villiers is set to build two history-themed amusement parks, one in Crimea and the other in Moscow. AFP PHOTO / POOL / ALEXANDER ZEMLIANICHENKO

Russian President Vladimir Putin speaks at an opening ceremony of the monument to the Heroes of the World War I, behind him, on the day of the 100th anniversary of its beginning in Victory Park on Poklonnaya Hill in Moscow, Russia, Friday, Aug. 1, 2014. Putin said in his speech that it's important today to remember how narrow ambitions and political interests triggered World War I in order to avoid new conflicts. (AP Photo/Yuri Kochetkov, pool)

Russia's President Vladimir Putin looks on in the Novo-Ogaryovo residence outside Moscow, early on July 21, 2014, while recording his video address on the Malaysia Airlines crash. In his overnight video address shown today in the early hours Putin said that the Malaysia Airlines crash should not be used for "political ends" and international experts given access to the crash site, without announcing specific steps by Moscow. AFP PHOTO / RIA-NOVOSTI / POOL/ MIKHAIL KLIMENTYEV

Russian President Vladimir Putin delivers a speech during a meeting with Russian ambassadors, envoys and diplomats at the Foreign Ministry headquarters in Moscow, Tuesday, July 1, 2014. (AP Photo/Maxim Zmeyev, Pool)

Russia's President Vladimir Putin attends his meeting with Russian ambassadors, envoys and diplomats at the Foreign Ministry headquarters in Moscow, on July 1, 2014. Putin gave today a speech on foreign policy to diplomats, with relations between Russia and the West seriously tested over the crises in Ukraine and Syria. AFP PHOTO / POOL/ MAXIM ZMEYEV