US declines to comment on possible vaccine swap with Korea Posted : 2021-04-21 10:13 Updated : 2021-04-21 10:22 In this April 18 file photo provided by U.S. Embassy Seoul, U.S. special envoy for climate John Kerry speaks during a round table meeting with the media in Seoul. AP-Yonhap The U.S. State Department on Tuesday declined to comment on any discussions with South Korea for a possible "vaccine swap" arrangement. "We are not going to comment on the details of our private diplomatic conversations," a department official told Yonhap News Agency. South Korean Foreign Minister Chung Eui-yong said on Tuesday (Seoul time) that the countries were "earnestly discussing" vaccine cooperation, under which Washington would provide COVID-19 vaccines from its stockpile to South Korea and Seoul would later pay back the U.S. with vaccines.