Russia and Ukraine have exchanged hundreds more prisoners as part of a major swap after an overnight attack on the Ukrainian capital that injured at least 15.

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.

An agreement by Ukraine and Russia for a 1,000-for-1,000 prisoner exchange is thought to be the only concrete result of peace talks in Istanbul which took place last week, which were the first such negotiations since 2022 when the ongoing war began. Russian President Vladimir Putin invaded Ukraine in February 2022.

Russia and Ukraine began a major prisoner exchange Friday, swapping hundreds of soldiers and civilians in the first phase of an exchange that was a moment of cooperation in otherwise failed efforts to reach a ceasefire in the 3-year-old war.

Explore how Putin's new Ukraine map reshapes Eastern Europe and impacts US interests amid ongoing geopolitical shifts.- Watch Video on English Oneindia

Turkey’s foreign minister is set to travel to Russia on Monday to discuss the situation in Ukraine, following direct talks earlier this month in Istanbul between the two sides in conflict.

As Ukrainian drones strike deep into Russian territory, they are disrupting day-to-day life and reminding Russians that the war is not confined to the trenches.

This week's prisoner exchange between Russia and Ukraine was the largest since the war’s onset. But skepticism of a lasting truce, and President Trump’s peace-making, remains. Bridget Brink resigned as ambassador to Ukraine in April,