Bulgaria Requests NATO Air Defense and Counter-Drone Support
Following multiple drone attacks on commercial vessels in the Black Sea, Sofia has requested additional NATO aircraft, air-defense missiles and counter-drone capabilities as security concerns intensify along the alliance's southeastern flank.
Bulgaria has formally requested additional NATO aircraft, air-defense missile systems and counter-drone capabilities following a series of attacks on commercial shipping in the Black Sea. Defense Minister Dimitar Stoyanov confirmed on October 16 that Sofia had submitted its request to NATO Secretary General Mark Rutte and the alliance's military command.
The request includes combat aircraft, maritime patrol aviation, surface-to-air missile systems and equipment designed to detect and counter unmanned aerial threats. Bulgaria is awaiting a decision from NATO on which capabilities allied countries can provide and whether additional forces will be deployed on Bulgarian territory.
The move follows several attacks on merchant vessels operating near the Bulgarian and Romanian coastlines, raising concerns about the protection of commercial shipping and NATO's ability to monitor threats in the western Black Sea.
Drone Attacks Expose Security Gaps in the Black Sea
Four commercial vessels have been struck in Bulgaria's exclusive economic zone during October, while two additional ships were attacked in Romanian territorial waters on October 15. The incidents have resulted in sunken vessels, damaged ships and missing crew members.
Bulgarian authorities have not conclusively identified those responsible. Prime Minister Rumen Radev has indicated that the attacks appear consistent with Russian interests, but acknowledged that investigators have not established sufficient evidence to formally attribute responsibility.
The attacks have also prompted closer coordination among Bulgaria, Romania and Türkiye, NATO's three Black Sea coastal members. Stoyanov intends to discuss additional security measures with his Romanian and Turkish counterparts, including improved surveillance and a coordinated response to drone threats.
On October 15, NATO Secretary General Mark Rutte met Radev and Romanian President Nicușor Dan in Brussels to discuss regional maritime security. NATO has indicated that it will continue reviewing its deterrence and defense posture in response to developments in the Black Sea.
Bulgaria Plans €80 Million Counter-Drone Investment
The emergency request comes as Bulgaria is pursuing its own air-defense modernization programs.
On October 14, Stoyanov confirmed plans for Bulgaria to participate in the NATO Drone Edge initiative, including a proposed €80 million investment in 20 counter-drone systems. The planned acquisition comprises 10 mobile and 10 stationary systems, with potential joint procurement involving Spain under the European Union's Security Action for Europe (SAFE) framework.
Separately, Bulgaria's Parliament approved the acquisition of five additional German-made IRIS-T SLM air-defense systems on October 15. The expanded procurement program, including the previously contracted system, has a total planned value of approximately €1.1 billion.
These programs address different layers of Bulgaria's air-defense requirements. The IRIS-T SLM systems are intended to strengthen ground-based missile defense, while specialized counter-drone equipment would provide additional capabilities against smaller unmanned threats.
NATO Faces Growing Pressure to Protect Commercial Shipping
The latest incidents have exposed a distinction between defending NATO territory and protecting commercial vessels operating in exclusive economic zones, where maritime activity extends beyond national territorial waters.
Aircraft surveillance, radar coverage and counter-drone interception can improve maritime situational awareness, but protecting commercial shipping across large areas of the Black Sea requires coordination among coastal states and allied forces.
Bulgaria's request therefore represents more than a temporary reinforcement measure. It places the security of commercial maritime routes alongside NATO's existing air-defense priorities on its eastern flank.
No deployment timetable, contributing countries or specific equipment packages had been announced as of October 16. The immediate question is whether NATO allies can provide additional capabilities while meeting competing air-defense requirements elsewhere along the alliance's eastern borders.
