During the talks, Ukraine proposed holding a summit between President Volodymyr Zelensky and Russian President Vladimir Putin before the end of August, according to National Security and Defense Council Secretary Rustem Umerov,

The warring sides remain far apart after the third round of U.S.-brokered peace negotiations on Wednesday. But there was progress on humanitarian issues.

The two sides agreed to have a prisoner exchange of 1,200 people, National Security and Defense Council Secretary Rustem Umerov said.