Ukrainian tanks train in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

A Ukrainian tanks fires during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tanks train in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

A Ukrainian tanks fires during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tanks take part in a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tanks take part in a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Commander of the Joint Forces the Armed Forces of Ukraine, Lieutenant General Serhiy Nayev drives a tank during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tanks take part in a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tanks take part in a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Commander of the Joint Forces the Armed Forces of Ukraine Lieutenant General Serhiy Nayev (C) speaks to Ukrainian tank crews during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Commander of the Joint Forces the Armed Forces of Ukraine Lieutenant General Serhiy Nayev hands awards to Ukrainian tank crews during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Commander of the Joint Forces the Armed Forces of Ukraine Lieutenant General Serhiy Nayev jumps off a tank during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Commander of the Joint Forces the Armed Forces of Ukraine Lieutenant General Serhiy Nayev (C) speaks to Ukrainian tank crews during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Commander of the Joint Forces the Armed Forces of Ukraine Lieutenant General Serhiy Nayev (L) hands awards to Ukrainian tank crews during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tank crew sit on their tank during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

A member of a Ukrainian tank crew lights a cigarette during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tank crew pose for a photograph during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

A member of a Ukrainian tank crew takes a break during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

A Ukrainian tank driver looks out of a tank`s hatch during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Commander of the Joint Forces the Armed Forces of Ukraine Lieutenant General Serhiy Nayev (3L) poses for a photograph with Ukrainian tank crews after a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tanks take part in a training exercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian servicemen ride on an infantry armoured vehicle during a training exercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

A Ukrainian tank driver looks out of a tank`s hatch during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tanks take part in a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

Ukrainian tanks take part in a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

A Ukrainian tank driver climbs out of a tank`s hatch during a training excercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)

A Ukrainian serviceman talks on the radio during a tank training exercise in the Chernigiv region on September 8, 2023, amid the Russian invasion of Ukraine. (Photo by Anatolii Stepanov / AFP)