On the 27th a Russian submarine surfaced in the Bering Sea off the coast of Alaska. This occurred while the US Navy and ten other countries were conducting their annual RIMPAC exercise. This exercise is a showcase of U.S. and their allies naval power. Russia asserted that this surfacing was not posturing but rather part of its own naval exercise that is taking place at the same time. The surfacing is not an isolated incident, there has been a notable increase in Russian posturing, especially around the Arctic region.

-Shawn

https://www.thedrive.com/the-war-zone/36056/russian-submarine-sets-off-alarm-bells-after-surfacing-near-alaska-amid-rash-of-posturing