Rosneft is a prominent Russian integrated energy company, specializing in the exploration, production, refining, and sale of petroleum and natural gas. Established as a state enterprise in 1993 and incorporated in 1995, it rapidly ascended to become Russia's leading oil producer by acquiring assets from the former Yukos company. A significant milestone occurred in 2013 when, following its acquisition of OJSC TNK-BP, Rosneft emerged as the world's largest publicly traded petroleum company. Controlled by the Russian government, Rosneft ranks as Russia's second-largest company by revenue and is a major global energy player, operating in over twenty countries worldwide.