It does not. Europe has been willing to send troops on the ground. The guarantee from the US could be in the form of equipment, air interdiction, etc. Note the the US already had guaranteed Ukraine sovereignty when it gave up its nukes. So no new treaty should even be necessary if the US only stuck to its words.
> it was, in fact, a fair deal. the minerals deal was to ensure we got some sort of repayment for all the aid we've already sent
No repayment was expected when the aid was given, otherwise it would have been given as loans.
Do you ask for repayment 2 years after giving people gifts? I would hate to be at your Christmas gathering.
> to make us a bit more comfortable with the additional aid
That's not how treaties work. You put, IN WRITING, something you agree to do and the other sides does too.
If Ukraine commits to give something while the US "feels good" about maybe doing something (or not, who knows?), that's not fair.
> what he did was simple disrespect
Musk holds conferences in the oval office in T-shirt and MAGA cap while his child scolds the president. Nobody stepped in to ask where was his suit, and certainly not the president.