Azerbaijani leader Ilham Aliyev is demanding answers, saying Vladimir Putin's latest apology "isn't enough" and that Moscow must take responsibility.

Russia’s failure to let the plane land and its refusal to take responsibility for the crash are upsetting a key partner.

A passenger plane crashed in Kazakhstan yesterday morning. It was probably shot down by Russia, Reuters reports. According to the agency's sources, Russian air defense shot down the Azerbaijan Airlines plane.

Following Azerbaijan's president calling for Moscow to accept blame for downing an Azerbaijani plane, there is growing public anger toward Russia for its apparent attempts to sidestep responsibility for the incident.

In the crash’s aftermath, Azerbaijan has unleashed rare and stinging criticism of Russia, with the country’s president saying Moscow’s response has caused “surprise, regret and rightful indignation.”