Aviation experts say Russia’s air defense fire likely caused Azerbaijan plane crash as nation mourns – https://t.co/Imoxi0kbT2 https://t.co/5aAKCqEoqS Caliber, an Azerbaijani news website with good government connections, also claimed that the airliner was fired upon by a Russian Pantsyr-S air defense system as it was approaching Grozny. It questioned why Russian authorities failed to close the airport despite the apparent drone raid in the area. Khamzat Kadyrov, head of Chechnya’s Security Council, said that air defenses downed drones attacking the region on Wednesday. Caliber also wondered why Russian authorities didn’t allow the plane to make an emergency landing in Grozny or other Russia