"The Russians and Putin have always believed Europe can never survive without Russian oil. ... Putin thinks if he wins in Ukraine, the Kremlin will be forgiven because there is no alternative, and the west is weak. That is how he thinks, how Gazprom thinks, and how Rosneft thinks. That is how they see the world. That is why Putin personally controls the energy trade. It is his sacred cash cow. ...There is a Russian proverb: a sacred place is never empty for long."