The special representative for the US presidency, Jared Kushner, called the meeting with Vladimir Putin detailed and productive, with very good discussions "on many fronts".
"A very detailed and fruitful meeting with President Putin," he told reporters in Dublin.
Kushner also noted that in the meeting with Zelensky he summarized the results of the last three days of negotiations on Ukraine.
Steve Witkoff and Jared Kushner flew to Moscow on Thursday after attending trilateral talks between Russia, the United States and Ukraine in Abu Dhabi. After the meeting in the Kremlin, American representatives went to Dublin, where they met with the head of government in Kiev, Zelensky.