On Thursday, Ukrainian President Volodymyr Zelensky met both Turkish President Recep Tayyip Erdogan and UN Secretary-General António Guterres in Lviv in western Ukraine.
Two weeks earlier, Erdogan met Russian President Vladimir Putin in Sochi.
Both parties then promised to strengthen political and economic cooperation.
Supporting Ukraine
But during the visit to Lviv, his first in Ukraine since the Russian offensive began in late February, Erdogan says Turkey supports Ukraine and that he will continue his diplomatic efforts to end the fighting.
- While we continue our efforts to find a solution, we remain on the side of our Ukrainian friends, Erdogan said, according to the AFP news agency.
The Turkish leader also promises that Turkey will help rebuild Ukrainian roads and bridges and other infrastructure.
Zaporizhzhya in focus
He also warned of the risk that an accident, which he describes as "another Chernobyl", could occur at the Russian-occupied Zaporizhzhya nuclear power plant.
Zelensky calls on the UN to ensure safety at the nuclear power plant and believes that the Russian military presence at the plant is "intentional".
Russia occupied Zaporizhzhya in March, and since late July, Kyiv and Moscow have accused each other of being behind attacks on the nuclear power plant.
After the meeting, Guterres called for an "immediate agreement" to ensure security in the area.
In addition to nuclear safety, grain exports were also discussed.
In early August, Ukraine resumed grain exports from its Black Sea ports after concluding an agreement with Russia negotiated by Turkey and the United Nations.