An international investigative team charged four people, including three with ties to Russian intelligence, with shooting down a Malaysia Airlines jet over Ukraine in 2014, killing 298 people.

The long-awaited announcement, the culmination of an investigation by officials from five countries, is the first time anyone has been charged in connection with the deadliest single episode in the five-year civil war in Ukraine.

Moscow has consistently denied any involvement in the disaster, but Western countries and experts have said from the beginning that Russian-backed separatists fighting the Ukrainian government were responsible.

What happened?

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Malaysia Airlines Flight 17 was flying from