Ukrainian soldiers from the 5th Assault Brigade stand during a 4-day rotation to the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Anton, 40, from the 5th Assault Brigade gets ready before heading for a 4-day rotation to the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Anton, 40, from the 5th Assault Brigade gets ready before heading for a 4-day rotation to the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Anton, 40, from the 5th Assault Brigade smokes while waiting before heading for a 4-day rotation to the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Anton, 40, from the 5th Assault Brigade smokes while waiting before heading for a 4-day rotation to the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

Ukrainian soldiers from the 5th Assault Brigade gather before heading for a 4-day rotation to the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Anton, 40, from the 5th Assault Brigade gets ready before heading for a 4-day rotation to the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Anton, 40, from the 5th Assault Brigade sits in a vehicle while heading for a 4-day rotation to the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

Ukrainian soldiers from the 5th Assault Brigade drive in a vehicle for a 4-day rotation to the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

Ukrainian soldiers Sergiy, 25, (C), and Yehor, 26, (L), call-signs "Moped" and "Zhiguli", from the 5th Assault Brigade stand in a house they are using after their return from a 4-day frontline rotation, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Bohdan, call-sign "Himik" (C), from the 5th Assault Brigade stands with other soldiers after their return from the frontline, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

Ukrainian soldiers from the 5th Assault Brigade speak together in a house they are using, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Bohdan, 21, call-sign “Flea” from the 5th Assault Brigade stands in a house which he and his fellow soldiers are using, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Bohdan, call-sign "Himik" from the 5th Assault Brigade cooks after the return of his fellow soldiers from a 4-day frontline rotation, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian military member Bohdan, (L) call-sign "Himik" from the 5th Assault Brigade cooks as his fellow soldier Sergiy, 25, R, call-sign "Moped" plays with a cat after his return from a 4-day frontline rotation, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

Ukrainian soldiers from the 5th Assault Brigade cook after the return of their fellow soldiers from a 4-day frontline rotation, in a house they are using, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)

A Ukrainian soldier Yehor, 26, (C), call-sign "Zhiguli" from the 5th Assault Brigade smokes with fellow soldiers after his return from a 4-day frontline rotation, in an undisclosed area near the town of Chasiv Yar, Donetsk region, on March 28, 2024, amid the Russian invasion of Ukraine. The eastern city of Chasiv Yar is facing a "difficult and tense" situation, a Ukrainian army official said on March 25, 2024. If Russia took Chasiv Yar, it could step up attacks on the strategic city of Kramatorsk that is already facing growing bombardment. (Photo by Roman PILIPEY / AFP)