NATO sends more patrol planes to the Black Sea after drone attacks on ships

What allies are sending

• Maritime patrol aircraft
• Radar systems
• Explosive exploitation teams
• Intelligence personnel
• Drones

NATO allies have sent or will send more maritime patrol aircraft, radar systems, explosive teams, intelligence staff and drones to the Black Sea.

Drones hit four merchant ships in Bulgaria's exclusive economic zone on Oct 6 and 13; two sank and 21 sailors are missing.

“Six attacks in 10 days by suspected Russian drones marks a dangerous and unacceptable escalation,” the EU's top diplomat said.

— Kaja Kallas, EU foreign policy chief

NATO has not said who is behind the attacks, though Romania said it shot down two Russian drones over the Black Sea on Oct 17.