Well NATO and it’s Allies are providing Ukraine with ‘unprecedented’ levels of support. But by law they are not required to do anything since Ukraine is not a Nato member.
The only reason Ukraine had Nuclear Weapons was because the newly-founded Ukraine ended up with the’ Soviet Union’s nuclear weapons’ in their territory after the Soviet Union collapsed......... .the agreement was between U.S.,U.K. and yes even Russia would guarantee Ukraine staying secure. But it was never Nato protection...... However, that was not a treaty -( it was no different than the Iran ‘Agreement”)....So, the next presidents can just no longer honor it. That’s exactly what Trump did with the Iran nuclear deal.
Zelensky and his yo yo’s thought and still think they can Force a full on Nato war with Russia. HE’s wrong and he’s very dangerous!
The odd thing about giving your word as a person or a country is that people expect you to keep it even when it is not “legally binding.” The US and the UK and NATO correctly regard their various security promises to Ukraine as both morally and strategically compelling. Putin is an untrustworthy, dangerous thug and it is in the interest of the US and NATO to stop him and Russia.