In this image taken from footage provided by the Ukrainian Defense Ministry Press Service, a Ukrainian soldiers use a launcher with US Javelin missiles during military exercises in Donetsk region, Ukraine, Wednesday, Jan. 12, 2022. President Joe Biden has warned Russia's Vladimir Putin that the U.S. could impose new sanctions against Russia if it takes further military action against Ukraine. (Ukrainian Defense Ministry Press Service via AP)

An Ukrainian Military Forces serviceman walks on a trench on the frontline with Russia-backed separatists near Luganske village, in Donetsk region on January 11, 2022. - Ukraine said on January 11, 2022 it welcomes "efforts" by the West and Russia to ease tensions over Ukraine after a week of high-stakes diplomacy kicked-off in Geneva this week. (Photo by Anatolii STEPANOV / AFP)

An Ukrainian Military Forces serviceman watches through a spyglass on a trench on the frontline with Russia-backed separatists near to Lugansk village, in Donetsk region on January 11, 2022. - Ukraine said on January 11, 2022 it welcomes "efforts" by the West and Russia to ease tensions over Ukraine after a week of high-stakes diplomacy kicked-off in Geneva this week. (Photo by Anatolii STEPANOV / AFP)

An Ukrainian Military Forces serviceman waits at his position on the frontline with Russia-backed separatists near Luganske village, in Donetsk region on January 11, 2022. - Ukraine said on January 11, 2022 it welcomes "efforts" by the West and Russia to ease tensions over Ukraine after a week of high-stakes diplomacy kicked-off in Geneva this week. (Photo by Anatolii STEPANOV / AFP)

An Ukrainian Military Forces serviceman walks on a trench on the frontline with Russia-backed separatists near Luganske village, in Donetsk region on January 11, 2022. - Ukraine said on January 11, 2022 it welcomes "efforts" by the West and Russia to ease tensions over Ukraine after a week of high-stakes diplomacy kicked-off in Geneva this week. (Photo by Anatolii STEPANOV / AFP)

An Ukrainian Military Forces serviceman walk past a metal plate which reads as "Caution mines" on the frontline with Russia-backed separatists near Luganske village, in Donetsk region on January 11, 2022. - Ukraine said on January 11, 2022 it welcomes "efforts" by the West and Russia to ease tensions over Ukraine after a week of high-stakes diplomacy kicked-off in Geneva this week. (Photo by Anatolii STEPANOV / AFP)

A Ukrainian soldier walks on the line of separation from pro-Russian rebels, Donetsk region, Ukraine, Monday, Jan. 10, 2022. President Joe Biden has warned Russia's Vladimir Putin that the U.S. could impose new sanctions against Russia if it takes further military action against Ukraine. (AP Photo/Andriy Dubchak), APTOPIX

TOPSHOT - A serviceman of Ukrainian Military Forces walks on the front line with Russia-backed separatists not far from Avdiivka, in Donetsk region, southeastern Ukraine on January 10, 2022 . (Photo by Anatolii STEPANOV / AFP)

An Ukrainian soldier walks at the line of separation from pro-Russian rebels, Donetsk region, Ukraine, Monday, Jan. 10, 2022. President Joe Biden has warned Russia's Vladimir Putin that the U.S. could impose new sanctions against Russia if it takes further military action against Ukraine. (AP Photo/Andriy Dubchak)

An Ukrainian soldier stands at the line of separation from pro-Russian rebels, Donetsk region, Ukraine, Monday, Jan. 10, 2022. President Joe Biden has warned Russia's Vladimir Putin that the U.S. could impose new sanctions against Russia if it takes further military action against Ukraine. (AP Photo/Andriy Dubchak)

A Ukrainian soldier walks in a trench at the line of separation from pro-Russian rebels, Donetsk region, Ukraine, Monday, Jan. 10, 2022. President Joe Biden has warned Russia's Vladimir Putin that the U.S. could impose new sanctions against Russia if it takes further military action against Ukraine. (AP Photo/Andriy Dubchak)

A Ukrainian soldier smokes in a trench at the line of separation from pro-Russian rebels, Donetsk region, Ukraine, Monday, Jan. 10, 2022. President Joe Biden has warned Russia's Vladimir Putin that the U.S. could impose new sanctions against Russia if it takes further military action against Ukraine. (AP Photo/Andriy Dubchak)

A serviceman of Ukrainian Military Forces walks on the front line with Russia-backed separatists not far from Avdiivka, in Donetsk region, southeastern Ukraine on January 10, 2022 . (Photo by Anatolii STEPANOV / AFP)

Serviceman of Ukrainian Military Forces stand in the trenches of the front line with Russia-backed separatists not far from Avdiivka, in Donetsk region, southeastern Ukraine on January 10, 2022 . (Photo by Anatolii STEPANOV / AFP)

A Ukrainian soldier walks in a trench at the line of separation from pro-Russian rebels, Donetsk region, Ukraine, Sunday, Jan. 9, 2022. President Joe Biden has warned Russia's Vladimir Putin that the U.S. could impose new sanctions against Russia if it takes further military action against Ukraine. (AP Photo/Andriy Dubchak), APTOPIX

CORRECTION / A Ukrainian Military Forces servicemen, caresses a cat on a trench on the frontline with Russia-backed separatists near to Avdiivka, southeastern Ukraine, on January 9, 2022. (Photo by Anatolii STEPANOV / AFP) / "The erroneous mention[s] appearing in the metadata of this photo by Anatolii STEPANOV has been modified in AFP systems in the following manner: [Ukrainian Territorial Defense Forces, the military reserve of the Ukrainian Armes Forces ] instead of [Ukrainian Military Forces servicemen, the military acting forces]. Please immediately remove the erroneous mention[s] from all your online services and delete it (them) from your servers. If you have been authorized by AFP to distribute it (them) to third parties, please ensure that the same actions are carried out by them. Failure to promptly comply with these instructions will entail liability on your part for any continued or post notification usage. Therefore we thank you very much for all your attention and prompt action. We are sorry for the inconvenience this notification may cause and remain at your disposal for any further information you may require."

A Ukrainian soldier in a trench at the line of separation from pro-Russian rebels, Donetsk region, Ukraine, Saturday, Jan. 8, 2022. President Joe Biden has warned Russia's Vladimir Putin that the U.S. could impose new sanctions against Russia if it takes further military action against Ukraine. (AP Photo/Andriy Dubchak), APTOPIX

TOPSHOT - Ukrainian Territorial Defense Forces, the military reserve of the Ukrainian Armes Forces walks on a trench on the frontline with Russia-backed separatists near to Avdiivka, Donetsk, southeastern Ukraine, on January 8, 2022. (Photo by Anatolii STEPANOV / AFP)

TOPSHOT - Ukrainian Territorial Defense Forces, the military reserve of the Ukrainian Armes Forces dig a trench on their position on the frontline with Russia-backed separatists near to Avdiivka, Donetsk southeastern Ukraine, on January 8, 2022. (Photo by Anatolii STEPANOV / AFP)