Russian invasion of Ukraine 'could be the biggest war in Europe since 1945'

Two Ukrainian soldiers have died as violence in eastern Ukraine escalated on Saturday amid fears of an invasion by Russia (Vadim Ghirda/AP)

Russia’s plan to invade Ukraine would lead to the largest conflict in Europe since the Second World War, the British Prime Minister has warned.

Boris Johnson said he wanted people to “understand the sheer cost in human life” that an incursion into Ukraine would bring, with casualties on both the Russian and Ukrainian sides, as he continued to urged Moscow to engage in peace talks.