So outright membership is likely not the route for overseas friends, but it seems we are inexorably moving towards a closer cooperation between a group of democratic countries outside the sphere of non-democratic China and ever more erratic US. Hopefully this will be an association which is less dependent on one single member than the western world has been under US lead.
It seems very likely the EU, Canada, Australia, New Zealand, and the UK would be part of this. Japan and Korea are still very US-dependent but given the lack of enthusiasm the US is showing its former allies, this may change quickly. I also expect growing cooperation with some of the south-American countries.
The world is definitely under realignment politically.