
Ukraine war latest: Russia's advance in Sumy Oblast ‘halted;’ Kyiv, Moscow carry out POW swap
Key developments on June 26: * "50,000 Russian troops pinned down" — Ukraine halts advance in Sumy Oblast, summer offensive "faltering," Syrskyi says * Ukraine, Russia conduct new POW swap under Istanbul deal * North Korea likely to send more troops to Russia by August, South Korea says * Explosions reported in Moscow, Russia