Ukraine vs. Russia history context

Russia has launched a full-scale invasion of Ukraine on the orders of Russian president Vladimir Putin. Tanks and troops have poured into Ukraine at points along its eastern, southern and northern borders, and targets all over the country have been attacked from land, sea and air. But why is Ukraine being invaded, and what might Russia want from its neighbouring country? To make sense of the current conflict we must understand the history of the relationship between the two inextricably linked countries, which dates to at least the 9th century. Here, Professor Serhy Yekelchyk, an expert in Ukrainian history and Russian-Ukrainian relations, explains nine milestone moments in the history of