This book is dedicated to an in-depth statistical analysis and modelling of international oil markets before and during the COVID-19 pandemic with special attention placed on the oil exporting countries Russia and Iran. It is proven that the negative impact of the pandemic on oil markets is huge and expressed by dramatically diminished volume of derivatives contracts at oil markets resulting in failure of oil prices. The coronavirus pandemic highlighted contradictions between the main geoeconomic playmakers of the world - USA, EU, China and partly Russia - however, only the USA has corresponding economic vehicles and instruments, described in the book, for ruling international oil markets.