A Ukrainian Emergency Ministry rescuer attends an exercise in the city of Zaporizhzhia on August 17, 2022, in case of a possible nuclear incident at the nearby nuclear plant.

Video. Ukraine war: Six key developments to know about today

Visiting Ukraine, the Turkish and UN leaders say an attack on the Russian-occupied nuclear plant risks "suicide" and a "new Chernobyl", as Moscow rejects an IAEA mission: today's latest updates.