Is there really nothing the EU or NATO can do to stop Russian vessels cutting energy and communication cables at the Baltic sea?

BBC Article

These are propaganda coups for the Russians. They're dragging anchors and getting away with it.

Can't EU countries block Russian vessels navigating the Baltic sea?

To access the Baltic sea from the North sea any ship must cross the Danish straits. Same question.

It gives the impression they're winning and makes the EU and NATO look weak.