These are the unanswered questions about the crash of a Ukrainian plane in Iran that killed 176 people

Nazanin Tabatabaee/WANA (West Asia News Agency)

• Many questions remain about the crash of a Ukraine International Airlines plane in Iran on Wednesday, which killed all 176 on board.
• The exact timeline of the crash is yet to emerge, while most victims are yet to be identified.
• But most speculation is about the actual cause of the crash, which happened as Iran directed missile strikes on Iraqi bases that housed US troops.
• Iranian authorities are distancing themselves from the idea that the plane was shot down, though the airline is defending the quality of the jet and its crew.
• It is also unclear what role the US and Boeing, the American manufacturer of the plane, will play in the investigations amid the high tensions between the US and Iran.
• Visit Business Insider's homepage for more stories.

All 176 people on board were killed when a Ukraine International Airlines plane crashed in Iran early on Wednesday morning.

Authorities in Iran and Ukraine, as well as at the airline, have offered statements and press conferences, but a number of key unanswered questions still swirl.

See the rest of the story at Business Insider

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