Prisoner exchange agreed at most significant contact between Kyiv and Moscow in months, but ‘work remains’ Prisoner exchange agreed at most significant contact between Kyiv and Moscow in months, but ‘work remains’ Ukraine and Russia concluded a second day of US-led talks in Abu Dhabi on Thursday without a breakthrough towards ending Europe’s most deadly conflict since the second world war. The two sides agreed to a reciprocal exchange of 157 prisoners of war each, offering a rare concrete