At the peace talks in Istanbul last month, Russia handed Ukraine a memorandum proposing "a mutual amnesty of 'political prisoners' and release of detained civilians" as a possible condition for a ceasefire in the three-and-a-half-year conflict.

Exclusive photos and video have emerged from a large-scale prisoner exchange conducted by Ukraine and Russia on July 4, according to the Security Service of Ukraine (SBU). "Today's exchange is the result of the work of the Joint Center for the Coordination of the Search and Release of Prisoners of War,