NS was not on russian territory, it was sabotaged in international waters just a few km outside of danish territory

Still outside of Ukrainian territory, the condition for NATO support. And it only transports gas from Russia to Germany, with the winter approaching. Even more telling, the US statement in reaction to this was "a tremendous opportunity to once and for all remove the dependence on Russian energy".

I think western weapons come with those conditions for now. But Ukraine is free to attack targets inside/outside of Russia with their own stuff.

hmm, maybe someone should tell nato about the assassination attempt on alexander dugin inside russia, the suicide bomb attack on russian infrastructure, the helicopter raids into russian territory, etc