Ukrainian President Volodymyr Zelenskyy said Tuesday that Ukrainian and US officials had agreed that "third parties" such as Turkey could oversee aspects of a future truce between Russia and Ukraine, according to Agence France-Presse.

"This is not a bad thing," Zelenskyy told reporters following US-Ukrainian talks in Saudi Arabia.

"For example, someone from Europe or Turkey could be involved in the maritime situation, and maybe someone from the Middle East in the energy sector."