(ANSA-AFP) - WASHINGTON, AUG 5 - President Joe Biden nominated Wednesday the son of Zbigniew Brzezinski, one of the most prominent figures in Cold War politics, as US ambassador to his ancestral Poland despite reported hesitation by Warsaw's right-wing government. Mark Brzezinski, who will need Senate confirmation, is an investor who served in foreign policy roles in previous Democratic administrations including as ambassador to Sweden under Barack Obama. The nomination had been rumored for weeks and a Polish news site, Onet.pl, reported that the government in Warsaw raised objections by arguing that Brzezinski holds Polish citizenship through his father, making him ineligible to be ambassador. The Polish government denied the account which came as the Biden administration takes a firmer line on democratic values with nations including Poland, whose populist government was closely allied with former president Donald Trump. (ANSA-AFP).