Not sure what you mean by "never succeeding". I come from on of ports cities and shipyards built by Russian Empire in the south of present day Ukraine in the en

Not sure what you mean by "never succeeding". I come from on of ports cities and shipyards built by Russian Empire in the south of present day Ukraine in the end of 18th century as a result of winning a war against Ottoman Empire. What they want now exactly is a different question, the answer most likely being in one man's head only. A revenge for loss in the Cold War, reclaiming the civilisational roots of "pan-slavic" territories, getting water back to Crimea, or any of the other hundreds of possible explanations. edit: not "Crimean war", but Russo-Turkish War (1787–1792)