Why the U.S. shouldn’t send arms to Ukraine

No one is talking about starting a war with Russia. In fact, allowing Ukraine to buy up to date weapon systems will help ensure that Russia does not start a war, since they would know that they would get a bloody nose.

How would Japan and Korea feel about the U.S.A. no longer selling them up to date weapon systems? Not being able to defend oneself means that one has to expect defeat from every and any aggressor.