This is the 2nd time China did this in that Baltic isn't it? Both times look intentional.. maybe don't allow Chinese ships in the Baltic?
replies(2):
Denmark controls the waters of the seaway to Sct. Petersburg and Kaliningrad that are some of the strategically most important ports of Russia.
Blocking of traffic to these would be a severe escalation.
Regularly Russian subs pass through Danish waters - controlled and allowed.
(I do realize that in particular US citizens have very high confidence in their own military capacity and might be overly bullish on situations like these)