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Russian police orchestra musicians pay tribute in front of the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow on December 26, 2016. The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / Natalia KOLESNIKOVA (Photo credit should read NATALIA KOLESNIKOVA/AFP/Getty Images)

Russian police orchestra musicians pay tribute in front of the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow on December 26, 2016.
The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / Natalia KOLESNIKOVA        (Photo credit should read NATALIA KOLESNIKOVA/AFP/Getty Images)

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Children lay flowers at the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow, on December 25, 2016, after a Russian military plane which included dozens of Red Army Choir members crashed. The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / Alexander UTKIN (Photo credit should read ALEXANDER UTKIN/AFP/Getty Images)

Children lay flowers at the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow, on December 25, 2016, after a Russian military plane which included dozens of Red Army Choir members crashed. 
The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / Alexander UTKIN        (Photo credit should read ALEXANDER UTKIN/AFP/Getty Images)

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Women carrying flowers arrive to people pay tribute in front of the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow on December 26, 2016. The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / Natalia KOLESNIKOVA (Photo credit should read NATALIA KOLESNIKOVA/AFP/Getty Images)

Women carrying flowers arrive to people pay tribute in front of the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow on December 26, 2016.
The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / Natalia KOLESNIKOVA        (Photo credit should read NATALIA KOLESNIKOVA/AFP/Getty Images)

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A picture shows a portrait of Valery Khalilov, Chief conductor and artistic director of Alexandrov song and dance ensemble placed next to candles, flowers and a drawing of a plane at the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow, on December 25, 2016, after a Russian military plane which included dozens of Red Army Choir members crashed. The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / ALEXANDER UTKIN (Photo credit should read ALEXANDER UTKIN/AFP/Getty Images)

A picture shows a portrait of Valery Khalilov, Chief conductor and artistic director of Alexandrov song and dance ensemble placed next to candles, flowers and a drawing of a plane at the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow, on December 25, 2016, after a Russian military plane which included dozens of Red Army Choir members crashed. 
The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / ALEXANDER UTKIN        (Photo credit should read ALEXANDER UTKIN/AFP/Getty Images)

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People lay flowers at the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow, on December 25, 2016, after a Russian military plane which included dozens of Red Army Choir members crashed. The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / Alexander UTKIN (Photo credit should read ALEXANDER UTKIN/AFP/Getty Images)

People lay flowers at the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow, on December 25, 2016, after a Russian military plane which included dozens of Red Army Choir members crashed. 
The Russian military plane crashed on its way to Syria on December 25, with no sign of survivors among the 92 onboard, who included dozens of Red Army Choir members heading to celebrate the New Year with troops. Russia's defence ministry said a body had been recovered from the Black Sea. / AFP / Alexander UTKIN        (Photo credit should read ALEXANDER UTKIN/AFP/Getty Images)