Private Russia apology tests fragile pause after Kharkiv train attack
Russian negotiators privately apologized to Ukraine after a Kharkiv-bound passenger train was hit by drones, killing six, highlighting gaps in an informal pause on attacks agreed during Abu Dhabi talks; Zelensky denounced the strike as terrorism, while discussions of a potential energy ceasefire continue with no formal deal, and Kremlin statements cite a Trump request for Putin to pause strikes on Kyiv.