epa10429125 (FILE) - UK soldiers with their battle tank Challenger (L) and US soldiers with their battle tank Abrams (R) take part in gunnery shoot-off between the Enhanced Forward Presence nations at the military exercise Iron Tomahawk in Adazi Military Base, Latvia, 23 October 2018 (reissued 25 January 2023). The US are to send some 31 of their M1 Abrams tanks to the Ukraine, US President Biden announced on 25 January 2023. The annnouncement comes the same day Germany cleared the way for deliveries of German-made Leopard 2 tanks to the Ukraine. Russian troops entered Ukraine territory on 24 February 2022, starting an armed conflict that has provoked destruction and a humanitarian crisis. EPA-EFE/VALDA KALNINA *** Local Caption *** 54722124