> It looks like nobody holding their promises right now, i.e. USA, Brittain, RF, France are traitors, thus Ukraine has full right to not obey this agreement either.
Nobody wants to start WW3 over Ukraine, except maybe Putin who has been left with very few options and doesn't care much about the lives of others, including his fellow Russians. The way he sees it is that he's liberating Ukraine from "nazis" and that the US has orchestrated a coup in 2014 replacing his puppet Yanukovych with their own. He has also signalled that he's ready to use the nuclear arsnal to deter anyone who interferes. What the West can do without potentially triggering WW3 is to economically cripple Russia, supply Ukraine with small arms, personnel carried anti tank and anti airplane weapons, ammo and possibly mercenaries. Any direct engagement between NATO and Russia could potentially trigger WW3 and nuclear warfare.
What you are doing is making unsubstantiated claims that Ukraine might be developing nuclear weapons. The very same false claims were in fact voiced by the Kremlin.