Alexander Vershinin

Associated Press

Russian Prime Minister Dmitry Medvedev, right, and Iranian Vice President Eshaq Jahangiri pose for a photo at the First Caspian Economic Forum in Turkmenbashi, Turkmenistan.

Russia, Iran, Debate Split of Caspian Riches

An agreement establishes territorial waters and fishing zones, but dividing the seabed that contains oil and gas fields is subject to further negotiations.