Exxon Mobil ( XOM.N ) and Chevron ( CVX.N ) are seeking to sell their stakes in Azerbaijan’s largest oilfield, marking the retreat of the U.S. majors from the former Soviet state after 25 years as they re-focus on domestic production. Oil platforms are seen in the Caspian Sea some 100 km east of Baku, January 22, 2013. REUTERS/David Mdzinarishvili Exxon is hoping to raise up to $2 billion from the sale of its 6.8 percent in the Azeri-Chirag-Gunashli (ACG) field in the Caspian Sea, according to industry sources. Rival Chevron said in a statement to Reuters it had also decided to launch the sale of its 9.57 percent stake in ACG as well as its 8.9 percent interest in the Baku-Tbilisi-Ceyhan (BTC) pipeline. Exxon spokeswoman Julie King declined to comment, saying “we don’t comment on market rumors or speculation”. A spokesman for Azerbaijan’s state energy […]