"We will further increase and step up our efforts in the Black Sea region," Stoltenberg said at a press conference in Brussels, as broadcast on the Alliance’s website.
According to the NATO secretary-general, the Alliance is also considering the establishment of a multinational framework brigade in Romania, proposed by Bucharest.
"We have decided to implement tailored measures for Black Sea region… there will be more NATO presence, and I also welcome the initiatives and the proposals from Romania making that possible," Stoltenberg added.
NATO has been bolstering its military presence in Eastern Europe and the Black Sea since the outbreak of the conflict in southeastern Ukraine in April 2014, in response to what it considers to be Russia's aggressive foreign policy.
Russia has repeatedly dismissed the Ukraine-related accusations leveled at it, warning that increased NATO activities near the country's borders could undermine regional and global stability.