Bulgarian Prime Minister Rumen Radev has rejected Russia's demand for NATO to withdraw from its eastern flank to the borders it held before 1997, describing the proposal as unrealistic and unacceptable during the European Political Community summit in Dublin. Radev said the Russian position, raised during negotiations in Abu Dhabi, was detached from reality and could not be considered as a basis for discussion. "This is an unthinkable, unrealistic position....