Russia and Ukraine agree to a major prisoner exchange after US-brokered Abu Dhabi talks, as Jared Kushner prepares to meet Vladimir Putin. Russia and Ukraine agree to a major prisoner exchange.Kushner announces plans to meet Russian President Vladimir Putin.US-led diplomatic efforts to revive peace talks continue.Officials involved in the US-brokered negotiations between Russia and Ukraine said on Wednesday that both sides had reached an agreement to carry out a major prisoner-of-war exchange.