I found the video below as I was trawling through YouTube. At first I poopooed it and said so in the remarks, but maybe it's a concept worth discussing.
However I do see some advantages to it and it might be feasible.
- I really have my doubts about it. When HM QE II dies I believe that both NZ and Australia will become fully fledged republics, so any assumption by the video's author that allegiance to the Crown would be a major factor will not apply.
- Both Australia and NZ are Asia Pacific nations, whilst Canada is a North American nation, and the poms, like it or not, are European and tied to Europe.
- Canada doesn't appear to take that much interest in Asia Pacific affairs and would Australia and NZ be interested in involved in European or North American adventures?
- The UK talks about an Asia Pacific involvement, but it doesn't have the defence capability to be of any reasonable value in region. For example it cannot deploy a CSG in the region permanently, nor has it the capability to permanently deploy a squadron of say 1 - 2 DDG, 3 - 4 FFG and a SSN.
- Out of the 4 nations, the UK has the most problematic defence policy disconnect between the military, civil service, and the political elite.
- I can qualify this by stating that out of the 4 nations, Canada has the worse defence procurement system, but the poms continually lurch from crisis to crisis and the standard response is to have another defence review.
- There is the geographical context with the only 2 nations having a close physical geographical relationship being Australia and NZ. The Atlantic Ocean sits between Canada and the UK, and its half a world between Vancouver and Brisbane or Vancouver and Auckland. It's a 27 hour flight from London to Auckland.
- The political context is important and the one thing that both Australia and NZ will not accept is the poms thinking that it's a return to the old days of the empire. There still appears to be some hangover of that attitude still existing in some quarters.
- Economic policy. Both Canada and the UK are very protectionist and this has to change for it to be worthwhile.
- Immigration. All four nations are quite restrictive in their immigration policies so that would have to change.
However I do see some advantages to it and it might be feasible.
- There would be 2 G7 countries (CA & UK) and 3 G20 countries (AU, CA, & UK) in the group.
- Like the video states the legal systems and defence systems are common.
- There is a common language amongst the group.
- 3 of the countries are significant food producers (AU, CA, NZ).
- The combined GDP of the group is quite significant.
- The group would have a nuclear power and a permanent member of the UNSC as a group member. This places it on par with the EU in that context.
- The CER agreement between Australia and NZ could be a template for the economic relationship between all group members. For the UK and Canada this means tariff free trade for trade from other group members.
- That's gonna fly like a lead zeppelin there.
- All of the group members should grant unlimited visa free to nationals of the other 3 nations. This would allow for a freer flow of people within the group which should be beneficial to all of the economies.