You are entirely correct that the agreement itself did not obligate the US to take any action in the case of aggression against Ukraine unless it included the use of nuclear weapons. However, the main point of the agreement was that the US, the UK, and Russia all made a commitment to Ukraine to respect its independence, sovereignty, and territorial borders. A lot of diplomatic negotiations had to occur behind the scenes to make that happen. For Russia to sign this treaty, then 20 years later violate it without the other signatories even so much as lifting a finger in protest is pretty unconscionable.
But you are right. I worded my initial post poorly by implying that the US had obligations to defend Ukraine. In the legal sense, they did not. I will argue, however, that in a moral sense, they very much did.
You are entirely correct that the agreement itself did not obligate the US to take any action in the case of aggression against Ukraine unless it included the use of nuclear weapons. However, the main point of the agreement was that the US, the UK, and Russia all made a commitment to Ukraine to respect its independence, sovereignty, and territorial borders. A lot of diplomatic negotiations had to occur behind the scenes to make that happen. For Russia to sign this treaty, then 20 years later violate it without the other signatories even so much as lifting a finger in protest is pretty unconscionable.
But you are right. I worded my initial post poorly by implying that the US had obligations to defend Ukraine. In the legal sense, they did not. I will argue, however, that in a moral sense, they very much did.