The presidents of Russia and Turkey have met and discussed a proposal for a pipeline that would carry natural gas from Russia to Turkey.

Vladimir Putin and Recep Tayyip Erdogan met Saturday in Baku, the capital of Azerbaijan, on the sidelines of the European games, Putin's spokesman Dmitry Peskov told Russian news agencies.

Peskov gave no specifics of the talks, other than to say they were detailed.

The pipeline, called Turkish Stream, has been proposed by Russia after the abandonment of South Stream, a long-proposed project to carry Russian gas to southern Europe.

Putin also met separately with Azerbaijan's President Ilham Aliyev. That meeting discussed a resolution of the dispute over Nagorno-Karabakh, a region of Azerbaijan occupied by Armenian troops and ethnic Armenian local forces.