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U.S. President Joe Biden and Turkish President Recep Tayyip Erdogan meet on the sidelines of the Group of 20 gathering in Rome on Oct. 31, accompanied by Secretary of State Antony Blinken and Foreign Minister Mevlut Cavusoglu. (Photo courtesy of the Turkish Presidency)

YUKIHIRO SAKAGUCHI and MOMOKO KIDERA, Nikkei staff writers

October 31, 2021 21:10 JST

Updated on November 1, 2021 05:32 JST

ROME/ISTANBUL -- In a meeting that was scheduled to run 20 minutes but lasted over an hour, U.S. President Joe Biden and Turkish President Recep Tayyip Erdogan sat down on the sidelines of the Group of 20 summit in Rome on Sunday to hash out the differences between the two NATO allies.