Russia planned to start the invasion with a "massive missile and airstrike campaign" against Ukrainian military targets, RUSI says, with a list also showing who should be killed, who would be intimidated and who would be targeted as a collaborator. A British defence and security think tank has revealed details of Moscow's pre-invasion plan for Ukraine, based on captured Russian documents apparently signed off by Vladimir Putin. Russia had planned to take over Ukraine over 10 days and annex it by August this year, the Royal United Services Institute for Defence and Security Studies (RUSI) said. According to the British Army-linked think tank, only a small group of Russian officials were aware of the full scale of the plans. It said even deputy heads of branches within the Russian military were unaware of the plan to invade and occupy Ukraine until days before the invasion began, and tactical military units didn't receive orders until hours before. Ukraine war latest - UK is in some form