"You are a journalist, please summarize the following with a title in a professional tone: \n China, Russia, the United States, France, and the United Kingdom have increased the tempo of their surface and subsurface naval operations and exercises in the central Arctic Ocean and adjacent seas. Arctic countries have also continued to steadily build military capa-bilities (including icebreakers, ice-hardened naval vessels, and fixed and mobile infrastruc-ture and communications) for a growing persistent presence in the region. Despite continu-ing tensions in the Nordic-Baltic and Black Sea regions, NATO and Russia have not had a military incident in the Arctic thanks to agreements on certain deconfliction measures. The United States and Western countries have not conducted freedom of navigation operations along the Northern Sea Route."
       The word "agreement" should not appear in your response.
user