> 1. Respect the signatory's independence and sovereignty in the existing borders.[7]
> 2. Refrain from the threat or the use of force against the signatory.
> 3. Refrain from economic coercion designed to subordinate to their own interest the exercise by the signatory of the rights inherent in its sovereignty and thus to secure advantages of any kind.
> 4. Seek immediate Security Council action to provide assistance to the signatory if they "should become a victim of an act of aggression or an object of a threat of aggression in which nuclear weapons are used".
> 5. Refrain from the use of nuclear arms against the signatory.
> 6. Consult with one another if questions arise regarding those commitments.[8][9]
That is absolutely what was agreed to, you can read the Budapest memorandum right here.
https://en.wikipedia.org/wiki/Budapest_Memorandum
Specifically the US, UK and Russia agreed to.
> 1. Respect the signatory's independence and sovereignty in the existing borders.[7]
> 2. Refrain from the threat or the use of force against the signatory.
> 3. Refrain from economic coercion designed to subordinate to their own interest the exercise by the signatory of the rights inherent in its sovereignty and thus to secure advantages of any kind.
> 4. Seek immediate Security Council action to provide assistance to the signatory if they "should become a victim of an act of aggression or an object of a threat of aggression in which nuclear weapons are used".
> 5. Refrain from the use of nuclear arms against the signatory.
> 6. Consult with one another if questions arise regarding those commitments.[8][9]
In this. case the "signatory" is Ukraine.