The Ukrainian Defence Ministry said pro-Russian rebel "terrorists" shot down a military plane carry 40 service members and nine crew as it landed at Lugansk.
The ministry statement said that the rebels "cynically and treacherously" downed the plane using anti-aircraft guns and heavy caliber machine guns.
It expressed sympathy to the families of those killed "for their tragic and irreparable loss."
More top news
Kirsty Williams successfully defended her Brecon seat, but her party lost four others in a disastrous night.
President Erdogan refuses to amend his country's terror laws in return for visa-free travel in Europe for his citizens.
A manhunt for a suspected fugitive gunman has ended after he handed himself in to police.