This is the glib over simplification he was complaining about with a haughty poorly informed statement
We have never done it with an ally this critical of this size with this level of investment. Yes we have done it with smaller, less critical nations very often and it is of coruse atrocious. In fact Sadam, Bin Ladin, and others were all originally our allies that we betrayed.
But we never did it against an aggressive nuclear power invading Europe.
True, but Europe has been relying on Russian oil for decades now, and the attempt to restrain the influence of Russia on European powers has become a great strain on the US. It pushed Russia closer to China and made it more likely that the US would get more involved in interminable proxy wars with a powerful eastern allience at the expense of its economic development. While I’m not a fan of Putin, I can’t see any strategic problems with the move.
> Sadam, Bin Ladin, and others were all originally our allies that we betrayed.
They were not allies, or not at all in the same sense. They were people the US did business with because of a common enemy, and then stopped doing business with when the situation changed. I don't think Saddam or Bin Laden thought for a moment that they were allies of the US, like Denmark and Japan are.