Russian drones are suspected of sinking a cargo ship and leaving chemical tankers ablaze near the Black Sea coasts of Bulgaria and Romania, respectively. The latest attacks mean that at least seven ships have been attacked in the exclusive economic zones of NATO member countries—and even within Romania's territorial waters if Russian involvement is confirmed in the case of the chemical tankers.

Such attacks have spurred requests for NATO to redeploy counter-drone systems to provide more protection. In a social media post on October 15, NATO Secretary General Mark Rutte stated that NATO had increased "counter-drone capabilities" along the alliance's eastern flank after meeting with the leaders of Bulgaria and Romania.