Official sources in Moscow hope that Kiev will arrive at a "hard, but the only right decision" to claim responsibility for the Tu-154 crash over the Black Sea. The plane was accidentally hit by a Ukrainian air defense missile launched from the Crimea. Official sources in Moscow told RIA Novosti that direct and indirect proofs that the plane had been destroyed by a Ukrainian S-200 missile are piling up day by day. Both Russian and Israeli experts are drawing this conclusion, one of the sources emphasized in an interview with RIA Novosti. A Sibir Airlines Tu-154 that flew from Tel-Aviv to Novosibirsk with 78 passengers and crew members fell in the Black Sea on October 4. All people on board died. The Ukrainian side ruled out the possibility of destroying the plane by a Ukrainian missile. Kiev sticks to this version up till now.