Recent drone strikes on commercial vessels in the western Black Sea, including the sinking of the grain carrier Royad Mammadov off Romania on October 5 and attacks on the Alfa Watan and Able off Bulgaria on October 6, have heightened tensions, with Ukraine attributing the incidents to Russian maritime and aerial drones while Bulgaria investigates without formal attribution. These events follow months of reciprocal targeting of shipping by both sides to disrupt grain and energy exports, including Ukrainian strikes on Russian-linked tankers such as the Aframax Rio near Sochi. Turkey has urged a moratorium on attacks to protect navigation routes, amid concerns over winter escalation and impacts on international trade. Trader sentiment reflects ongoing naval drone warfare and the risk of further Russian actions in response to Ukrainian operations against its fleet and shadow fleet.