What kind of a ally expects the US to stand by them but won't stand by us?

Most of them have taken that position, a fairly long long time ago. Seems they hate us but need us all at the same time.

It has been revealed that the US staunchest ally will not become involved if Trump is idiotic enough to unilaterally strike at N. Korea.

That ally is Britain.

You cannot say in a million years that in virtually all confrontations the US has had with foreign countries Britain has not been by their side.

If Trump attacks N. Korea without legal provocation China has already said that they will help N. Korea.

However if N. Korea were to attack another country such as Guam or S. Korea Trump and the US has every right to got to their aid and I think you can safely guarantee that many other countries, including Britain will stand by them.

If Trump does attack N. Korea without them actually attacking another country then it is 90% definite that a war will erupt between several other countries which will lead to the ultimate destruction of the world as we know it.

Poseidon

A difference of opinion is not always a difference of allegiance, you know.

Hitler was surrounded by yes-men. It's good to hear people out on all sides, but then again I believe in democratic ideals.

Nobody with any sanity should stand by Dump, and that includes patriotic Americans. The man is a legitimate psychopath who has no business anywhere near the White House.

Communists.

Maybe if Trump stopped insulting them.