Russia launched a major attack on the Ukrainian capital Kyiv and killed at least 13 people in strikes across the country as the two sides released hundreds more prisoners on the second day of a major prisoner exchange.

Russia and Ukraine each exchanged 307 of their service personnel on Saturday on the second day of a prisoner exchange that, when completed, is set to be the largest such swap in the three-year war between the two countries.

Russia and Ukraine each exchanged 307 of their service personnel on Saturday on the second day of an extended prisoner swap set to be the largest in the three-year war. U.S. President Donald Trump has suggested the swap - which should see 1,