India’s ONGC Videsh Ltd (OVL) has recently finalized a deal worth USD 1.001 billion to buy around 2.7% stake in the Azeri, Chirag and Guneshli oil fields of the Caspian Sea. These fields are located in which among the following countries?

In April 2013, OVL concluded a USD 1.001 billion deal to buy US energy major Hess Corp’s 2.7213 percent stake in the Azeri, Chirag and the deepwater portion of Guneshli fields in the Azerbaijan sector of the Caspian Sea and 2.36 percent of the associated Baku-Tbilisi-Ceyhan (BTC) pipeline.