Russian aviation faced big delays due to the threat posed by Ukrainian drones, while Moscow's attacks on Ukraine killed at least one person.

Russia and Ukraine appear close to agreeing to hold a new round of peace talks in Turkey this week, although the Kremlin said on Monday that the two sides held "diametrically opposed" positions on how to end the war.

Russia and Ukraine again exchanged a series of major overnight drone strikes as the two sides maneuvered ahead of a possible resumption of ceasefire talks later this week. Renewed talks -- if they do happen -- would take place as both Kyiv and Moscow near new records for the scale and intensity of cross-border strikes,