Ukrainian President Volodymyr Zelenskyy is meeting the U.N. chief and Turkey's leader in Lviv near Ukraine's border with Poland.
Thursday's talks will focus on the recent deal to resume Ukraine's grain exports, the volatile situation at a Russian-occupied nuclear power plant and efforts to help end the war.
Turkey and the United Nations helped broker an agreement last month clearing the way for Ukraine to export 22 million tons of grain stuck in its ports since Moscow invaded Feb. 24.
The U.N. chief will focus on containing the volatile situation at a Russian-occupied nuclear power plant, while Turkey's leader will try to expand grain exports from Ukraine.