He did say when elected it's America first so that's what he is doing literally....f**k the rest of the world. Now what the rest of world needs to do is say F**k America. So don't do any business with them as it's not a two way street and is one way with a dead end.
We don't need a trade deal to trade with the US. If they are prepared only to accept a trade deal that benefits them at our expense, we don't have to agree it.