An Ukrainian Military Forces serviceman gives the thumbs-up as he stands in a snow covered trench on the frontline with the Russia-backed separatists near Zolote village, in the eastern Lugansk region, on January 21, 2022. - Ukraine's Foreign Minister Dmytro Kuleba on January 22, 2022, slammed Germany for its refusal to supply weapons to Kyiv, urging Berlin to stop "undermining unity" and "encouraging Vladimir Putin" amid fears of a Russian invasion. (Photo by Anatolii STEPANOV / AFP)

An Ukrainian Military Forces serviceman poses with his weapons in a trench on the frontline with the Russia-backed separatists near Zolote village, in the eastern Lugansk region, on January 21, 2022. - Ukraine's Foreign Minister Dmytro Kuleba on January 22, 2022, slammed Germany for its refusal to supply weapons to Kyiv, urging Berlin to stop "undermining unity" and "encouraging Vladimir Putin" amid fears of a Russian invasion. (Photo by Anatolii STEPANOV / AFP)

A poster of Russian President Vladimir Putin is used as target practice along a trench on the frontline with Russia-backed separatists near Zolote village, in the Lugansk region, on January 21, 2022. - Ukraine's Foreign Minister Dmytro Kuleba on January 22, 2022, slammed Germany for its refusal to supply weapons to Kyiv, urging Berlin to stop "undermining unity" and "encouraging Vladimir Putin" amid fears of a Russian invasion. (Photo by Anatolii STEPANOV / AFP)

A poster of Russian President Vladimir Putin is used as target practice along a trench on the frontline with Russia-backed separatists near Zolote village, in the Lugansk region, on January 21, 2022. - Ukraine's Foreign Minister Dmytro Kuleba on January 22, 2022, slammed Germany for its refusal to supply weapons to Kyiv, urging Berlin to stop "undermining unity" and "encouraging Vladimir Putin" amid fears of a Russian invasion. (Photo by Anatolii STEPANOV / AFP)

An Ukrainian Military Forces serviceman checks his weapon as he stands in a trench on the frontline with the Russia-backed separatists near Zolote village, in the eastern Lugansk region, on January 21, 2022. - Ukraine's Foreign Minister Dmytro Kuleba on January 22, 2022, slammed Germany for its refusal to supply weapons to Kyiv, urging Berlin to stop "undermining unity" and "encouraging Vladimir Putin" amid fears of a Russian invasion. (Photo by Anatolii STEPANOV / AFP)

An Ukrainian Military Forces serviceman walks along a snow covered trench on the frontline with the Russia-backed separatists near Zolote village, in the eastern Lugansk region, on January 21, 2022. - Ukraine's Foreign Minister Dmytro Kuleba on January 22, 2022, slammed Germany for its refusal to supply weapons to Kyiv, urging Berlin to stop "undermining unity" and "encouraging Vladimir Putin" amid fears of a Russian invasion. (Photo by Anatolii STEPANOV / AFP)

An Ukrainian Military Forces serviceman and his dog enter a dugout on the frontline with the Russia-backed separatists near Zolote village, in the eastern Lugansk region, on January 21, 2022. - Ukraine's Foreign Minister Dmytro Kuleba on January 22, 2022, slammed Germany for its refusal to supply weapons to Kyiv, urging Berlin to stop "undermining unity" and "encouraging Vladimir Putin" amid fears of a Russian invasion. (Photo by Anatolii STEPANOV / AFP)

An Ukrainian Military Forces serviceman smokes in a dugout, as he and a cat sit near a wood burner on the frontline with the Russia-backed separatists near Zolote village, in the eastern Lugansk region, on January 21, 2022. - Ukraine's Foreign Minister Dmytro Kuleba on January 22, 2022, slammed Germany for its refusal to supply weapons to Kyiv, urging Berlin to stop "undermining unity" and "encouraging Vladimir Putin" amid fears of a Russian invasion. (Photo by Anatolii STEPANOV / AFP)