Well, if he did do that, then Germany is in no position to do much of anything about it. They are certainly not about leave NATO and go it alone, nor will they complain to NATO that they suffered an Article 5 attack and force other NATO countries to choose between Germany and the United States. After all, you do not force such a decision when you already know the results would not go in your favor.
And Russia seems in no position to do anything about it either. The best they have offered is sending their propaganda army out to continue spamming the internet with their grievances, which isn’t going to help them win their little war.
“And Russia seems in no position to do anything about it either”
The Russians are taking their case to the UN that this needs to be investigated as a case of international terrorism. Only the most stupid don’t think the US is behind this. And now Russia will probably go ahead and take out the rest of Ukraine’s infrastructure, that means no more gas, electricity, or water for the people. That means tens of millions fleeing to the West to survive, and an expensive and disruptive humanitarian crisis for the West to deal with.
The US doesn’t care, it’s still trying to do everything it can to justify bringing in NATO troops and WW3. Will the EU countries allow themselves to be suckered into this? Outside of Germany and the UK, I wouldn’t count on it like the idiot neocons seem to be doing. They may be surprised to see how many EU countries refuse to go along with it.