Russian MoD reports mass UAV attack affecting Saint Petersburg and Leningrad Oblast

A Russian milblog post claims Ukrainian forces conducted a mass UAV raid targeting Saint Petersburg and Leningrad Oblast during the opening day of the St. Petersburg International Economic Forum. Russia's Defense Ministry reportedly said 354 UAVs were intercepted over 16 regions and the Sea of Azov, including 59 in Leningrad Oblast, with alleged infrastructure hits in Kronstadt and several Saint Petersburg districts.
Authorities reportedly acknowledged strikes/damage to infrastructure in Kronstadt and Kirovsky and Krasnoselsky districts; social media footage allegedly shows impacts near the St. Petersburg oil terminal and UAV overflights. Claimed target in Kronstadt included the corvette 'Boykiy' in dry dock, but extent of damage is not confirmed.