Russian Defense Minister Sergei Shoigu ordered his troops to withdraw from the west bank of the Dnipro River near the strategic southern Ukrainian city of Kherson in a significant setback for Moscow and potential turning point in the war.

Ukraine reacted with caution to Wednesday's announcement, saying some Russian forces were still in Kherson and that additional Russian manpower was being sent to the region.

"They are moving out but not as much as would be taking place if it was a full pullout or regrouping," Oleksiy Arestovych, adviser to Ukrainian President Volodymyr Zelenskyy, said in a video posted online on Wednesday night.