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.

Two NATO members have accused Russia of provocation along the alliance's eastern flank. Poland said on Thursday that its fighter jets had intercepted a Russian Su-24 bomber that performed "dangerous" maneuvers in international airspace over the Baltic Sea.

War experts believe Moscow is planning a summer offensive in Ukraine. Economic and military pressures closer to home could end up pushing Moscow into peace talks. A slowdown in inflation, declining industrial output and consumer spending all point to a slowdown in the Russian economy.

President Vladimir Putin said on Friday that Russia needs to strengthen its position in the global arms market by increasing exports of weapons.

Ukraine would like U.S. President Donald Trump to be present at a potential meeting between President Volodymyr Zelensky and Russian President Vladimir Putin, Ukrinform reported on May 23, citing Foreign Minister Andrii Sybiha.

Zelensky says Putin makes ‘mockery of entire world’ as historic prisoner swap continues - The Ukrainian president said 390 prisoners were returned on Friday, with more to follow over the weekend

The Kremlin that its air defenses shot down 485 drones across 14 regions in its control. Several reports indicate other drones found their targets.