All are betting that quieter, greener and battery-powered aircraft can revolutionize the way people travel. Major U.S.

The Russian leader’s phone call stopped short of acknowledging responsibility for the crash of an Azerbaijan Airlines plane.

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Putin apologized to Azerbaijani President Ilham Aliyev “for the fact that the tragic incident occurred in Russian airspace.” ...

Russian president admits problems began in his country’s airspace and ‘offers his apologies’ to Azerbaijani leader ...

ASTANA — Kazakh President Kassym-Jomart Tokayev spoke with Russian President Vladimir Putin in a telephone conversation on ...

Russian President Vladimir Putin apologized to Azerbaijani President Ilham Aliyev over the December 25 Azerbaijan Airlines ...

Russia’s President Vladimir Putin has apologized for the fact that an Azerbaijan Airlines flight crashed after entering ...

Some 38 people were killed in the crash, which saw an Azerbaijani airliner brought down over Kazakhstan on December 25.