As Ukraine's forces prepare for major deliveries of armored combat vehicles, troops are training on Leopard tanks in Spain.  According to Ukrinform, Spain is training troops to use Leopard 2 A4 tanks while it readies six tanks to Ukraine by late March or early April, according to Defense Minister Margarita Robles, as reported by Reuters. The UK is preparing to arm Ukraine with its Challenger 2 tanks while the US plans to send 31 M1 Abrams tanks