NATO is conducting non-stop activities of mobilization nature. And Russia is already presented as the main adversary. There are no direct threats to attack Russia. Nevertheless, different scenarios are being worked out. For example, to exclude options similar to the “annexation” of Crimea. The threat to Kaliningrad exclave has increased many times.
One of the high-ranking NATO generals announced that a military operation against Kaliningrad region is possible. So, NATO exercises are a direct immediate threat to Russian borders.