Ukrainian President Volodymyr Zelenskiy, Turkish President Tayyip Erdogan and UN Secretary-General Antonio Guterres shake hands after a joint news conference following their meeting in Lviv, Ukraine, August 18, 2022. (Photo: REUTERS)

UN Secretary-General Antonio Guterres told reporters after talks in Lviv, Ukraine, on Thursday he was gravely concerned about circumstances at the Zaporizhzhia nuclear plant and called for military equipment and personnel to be withdrawn.

Turkish President Tayyip Erdogan said he, Guterres and Ukrainian President Volodymyr Zelenskiy discussed building on a recent positive atmosphere to revive peace negotiations with Russia that took place in Istanbul in March.

In a deal brokered by the United Nations and Turkey, Russia and Ukraine reached an agreement in July for Russia to lift a blockade of Ukrainian grain shipments, and exports resumed at the beginning of August.