Igor Sechin, CEO of Russian oil company Rosneft, talks to the Journal's Gregory White after the completion of the BP-Rosneft deal giving BP nearly 20% stake in Rosneft. He says his goal is to make Rosneft "the most efficient." The deal made Rosneft the largest oil company in the world. Sechin sees that not as a goal set by management. Sechin started out as an aide to Putin in the early 1990's, and became chairman of Rosneft in 2004. The deal with BP gives Rosneft access to western technology to become the most efficient oil company in Russia. Sechin sees Rosneft's core business as technology.