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

Russian President Vladimir Putin attends a joint press conference with his Austrian counterpart in Vienna on June 24, 2014. Putin arrived to hold talks with President Heinz Fischer and Chancellor Werner Faymann during the one-day flying visit to discuss the situation in Ukraine. AFP PHOTO/DIETER NAGL

Russian President Vladimir Putin attends a joint press conference with his Austrian counterpart in Vienna on June 24, 2014. Putin arrived to hold talks with President Heinz Fischer and Chancellor Werner Faymann during the one-day flying visit to discuss the situation in Ukraine. AFP PHOTO/DIETER NAGL

Russian President Vladimir Putin meets with guests during his meeting with his Austrian counterpart at Hofburg Palace in Vienna on June 24, 2014. Putin arrived to hold talks with President Heinz Fischer and Chancellor Werner Faymann during the one-day flying visit to discuss the situation in Ukraine. AFP PHOTO/JOE KLAMAR

Russian President Vladimir Putin reacts while he meets with guests during his meeting with his Austrian counterpart at Hofburg Palace in Vienna on June 24, 2014. Putin arrived to hold talks with President Heinz Fischer and Chancellor Werner Faymann during the one-day flying visit to discuss the situation in Ukraine. AFP PHOTO/JOE KLAMAR

Russian President Vladimir Putin attends a joint press conference with his Austrian counterpart in Vienna on June 24, 2014. Putin arrived to hold talks with President Heinz Fischer and Chancellor Werner Faymann during the one-day flying visit to discuss the situation in Ukraine. AFP PHOTO/DIETER NAGL

Russian President Vladimir Putin meets with the Swiss President and chairman of the Organisation for Security and Co-operation in Europe (OSCE) at the Ritz-Carlton Hotel in Vienna, Austria on June 24, 2014. During his one-day visit to Austria Russian President Vladimir Putin hit back at Western criticism of South Stream, saying the planned pipeline would benefit both the EU and Moscow and reduce Europe's dependence on gas flowing through crisis-hit Ukraine. AFP PHOTO/JOE KLAMAR

In this June 24, 2014, photo, Russian President Vladimir Putin listens to Swiss President and OSCE chairperson in office Didier Burkhalter during talks with the Organization for Security and Cooperation in Europe, OSCE, in Vienna, Austria. The United States and its European allies are finalizing a package of sanctions on Russia's key economic sectors that could be levied as early as this week, though the package might be delayed because of positive signals from Putin, administration officials and others close to the decision-making said Tuesday. (AP Photo/Ronald Zak)

Russian President Vladimir Putin takes part in a wreath laying ceremony at the Tomb of the Unknown Soldier outside Moscow's Kremlin Wall, in Moscow, Russia, Sunday, June 22, 2014 to mark the 73rd anniversary of the Nazi invasion of the Soviet Union. (AP Photo/Alexander Zemlianichenko)

Russian Vladimir Putin takes a part in a wreath laying ceremony at the Tomb of the Unknown Soldier outside Moscow's Kremlin Wall, in Moscow, Russia, Sunday, June 22, 2014, to mark the 73rd anniversary of the Nazi invasion of the Soviet Union. Russian President Vladimir Putin has urged both sides in the Ukrainian conflict to sit down at the negotiating table and find a compromise.(AP Photo/Alexander Zemlianichenko)

Russian President Vladimir Putin arrives to take a part in a wreath laying ceremony at the Tomb of the Unknown Soldier outside Moscow's Kremlin Wall, in Moscow, Russia, Sunday, June 22, 2014, to mark the 73rd anniversary of the Nazi invasion of the Soviet Union. Russian President Vladimir Putin has urged both sides in the Ukrainian conflict to sit down at the negotiating table and find a compromise. (AP Photo/Alexander Zemlianichenko)

Russian President Vladimir Putin takes part in a wreath laying ceremony at the Tomb of the Unknown Soldier outside Moscow's Kremlin Wall, in Moscow, Russia, Sunday, June 22, 2014, to mark the 73rd anniversary of the Nazi invasion of the Soviet Union. Russian President Vladimir Putin has urged both sides in the Ukrainian conflict to sit down at the negotiating table and find a compromise. (AP Photo/Alexander Zemlianichenko)

Russia's President Vladimir Putin attends a meeting in the Kremlin in Moscow, on June 16, 2014. Russia warned today Europe of possible supply disruptions if Ukraine siphons off gas destined for the West, as it said it was seeking to recover $4.5 billion from Kiev in an arbitration court. AFP PHOTO/ RIA-NOVOSTI/ POOL/ ALEXEY DRUZHININ

Russia's President Vladimir Putin attends a meeting in the Kremlin in Moscow, on June 16, 2014. Russia warned today Europe of possible supply disruptions if Ukraine siphons off gas destined for the West, as it said it was seeking to recover $4.5 billion from Kiev in an arbitration court. AFP PHOTO/ RIA-NOVOSTI/ POOL/ ALEXEY DRUZHININ

Russia's President Vladimir Putin attends a meeting in the Kremlin in Moscow, on June 16, 2014. Russia warned today Europe of possible supply disruptions if Ukraine siphons off gas destined for the West, as it said it was seeking to recover $4.5 billion from Kiev in an arbitration court. AFP PHOTO/ RIA-NOVOSTI/ POOL/ ALEXEY DRUZHININ

Russia's President Vladimir Putin arrives to attend an international D-Day commemoration ceremony on the beach of Ouistreham, Normandy, on June 6, 2014, marking the 70th anniversary of the World War II Allied landings in Normandy. AFP PHOTO / DAMIEN MEYER

Russian President Vladimir Putin speaks during his news conference at the Normandy Barriere hotel in Deauville, after the international D-Day commemoration ceremony in Ouistreham in Normandy, on June 6, 2014, marking the 70th anniversary of the World War II Allied landings in Normandy. AFP PHOTO / YURI KADOBNOV

Russian President Vladimir Putin gestures during a news conference at the Normandy Barriere hotel in Deauville, after the international D-Day commemoration ceremony in Ouistreham in Normandy, on June 6, 2014, marking the 70th anniversary of the World War II Allied landings in Normandy. AFP PHOTO / YURI KADOBNOV

Russian President Vladimir Putin speaks during his news conference at the Normandy Barriere hotel in Deauville, after the international D-Day commemoration ceremony in Ouistreham in Normandy, on June 6, 2014, marking the 70th anniversary of the World War II Allied landings in Normandy. AFP PHOTO / YURI KADOBNOV

Russian President Vladimir Putin speaks during his news conference at the Normandy Barriere hotel in Deauville, after the international D-Day commemoration ceremony in Ouistreham in Normandy, on June 6, 2014, marking the 70th anniversary of the World War II Allied landings in Normandy. AFP PHOTO / YURI KADOBNOV