Evidence

Ukrainska Pravda (a well-established Ukrainian outlet) published a report matching the claim almost verbatim, citing the OSINT project Exilenova+ as the source: a Su-34 frontline bomber was reportedly hit at the airfield in Akhtubinsk overnight on August 19-20, with Exilenova+ describing 'a fuel spill followed by a fire' and stating the bomber was significantly damaged, based on satellite imagery. Exilenova+ is a known Ukrainian OSINT Telegram channel that has been cited by multiple outlets (Militarnyi, Defense Express, Euromaidan Press, Times of Central Asia) for previous satellite-based damage assessments of Russian military and industrial sites, giving it a track record of being referenced by mainstream and specialist war-reporting outlets. However, I found no independent verification of this specific Su-34/Akhtubinsk claim beyond Ukrainska Pravda's report, which itself is essentially relaying Exilenova+'s own claim. No official Russian Ministry of Defence statement, no Reuters/AFP Fact Check, Bellingcat, or EUvsDisinfo assessment of this specific incident appeared in searches, and no satellite imagery from an independent source (e.g., Planet Labs, Maxar via a neutral outlet) was found corroborating the damage.