This is NCD, so the only appreciate conclusion to draw here is as follows: Crimea invasion imminent!

Looking at your quote they should be allowed passage since the US is not formally a combatant (i.e. belligerent) in the conflict in question.

I wouldn’t talk about a meltdown of society here - this is a natural disaster, not the sacking of Rome. In due time help will arrive, people will bury the dead and rebuild. Though I agree it makes you appreciate how we take things for granted until one day they aren’t.

Actually even Germany could have had motivation to blow it up. There was strong pressure from local far right groups to re-open trade with Russia, blowing up the pipelines has taken that option of the table. Maybe a bit extreme reaction to a minority group, but still a possible motive.