"Earlier this year, US and German intelligence reportedly foiled a Russian plot to assassinate a number of defense industry executives across Europe, including a plan to kill the Rheinmetall CEO, Armin Papperger."

I would say that Russia already is engaging in acts of sabotage or "hybrid warfare".

If you are going to support Ukraine, support them in a fashion that actually allows them to win. This slow walk of aid and putting rules of engagement on Ukraine that no sane country would ever follow if attacked is sickening.

Russia owns the US government now. They’ve already won.