Russia and the European Union are holding their first major talks since a chilling two-week cutoff of Russian gas supplies last month. European Commission President Jose-Manuel Barroso is to meet with Russian President Dmitry Medvedev and Prime Minister Vladimir Putin in Moscow on Friday. Barroso is leading a delegation of EU commissioners including the energy, trade and foreign policy chiefs. Long-troubled EU-Russia ties were badly soured by Russia's recent war with Georgia and by the suspension of natural-gas supplies to Europe across Ukraine, the results of a politically charged price dispute between Moscow and Kiev. Deliveries resumed less than two weeks ago and the cutoff deepened EU concerns about its reliance on Russia for a quarter of its natural-gas needs.