In that capacity Morningstar represented the United States at the signing ceremony of the intergovernmental agreement of the Nabucco pipeline.
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Russian President (then First Deputy Prime Minister) Dmitry Medvedev and former Hungarian Prime Minister Ferenc Gyurcsány have stated that there is no contradiction between South Stream and the Nabucco pipeline project, designated to bring Caspian (Azerbaijani) gas to Southern and Central Europe via Turkey.