Claim: Russian aviation reportedly dropped FAB 500 bombs on an underground base of Ukraine's Majar's Birds drone unit in the Kherson region.
Verdict: Partially True (60% confidence)
Explanation: According to voennoedelo.com and en.iz.ru, Russian forces destroyed an underground base of Ukraine's Majar's Birds drone unit in the Kherson region, confirming the target and location aspects of the claim. However, neither source specifically mentions the use of FAB 500 bombs, which is a critical component of the claim. The absence of confirmation regarding the specific type of bombs used prevents a 'correct' verdict, leading to a 'partially_true' classification.