Which country is the "No. 2" in the Anglophone world?

[Santander]

The United Kingdom, until it leaves the European Union and moves behind Canada and Australia.

You can't be serious.

Actually, in its current rudderless state, the UK may go through a period where it is unable to exert influence in world affairs to nearly its potential. So no, it's not ridiculous to say that such a thing could happen, at least for a period of time.

The "special relationship" has been the difference in post-war world affairs that set the UK apart from countries like France and Germany on the world stage. Trump doesn't believe in mutually-beneficial friendships, he only believes in transactional relationships, and he cannot be considered a reliable political or economic ally for as long as he remains in office. China emphatically demonstrated in 2014 in Hong Kong that it does not consider the UK to be its equal.  The UK's whimper in response to the dragon's growl was perhaps the most humiliating event for a former colonial power in recent years. The EU has little incentive to play nice with the UK, as we are seeing now. Reaching back to the Commonwealth as Nigel Farage, and the likes often tout would be happy talk at best and humiliating at worst, grasping to breathe life into the faded remnants of once-real glory.

Now, the EU is not an institution I am particularly fond of, nor do I believe further hitching the UK's wagon to Europe is the best path forward. I believe a non-EU UK both can and should be one of the five or so most powerful countries in the world for the next century, but with the way things have unfolded, and how the cards lie on the table, it is naïve to expect anything other than a diminished UK in the near future, where it may indeed operate at only slightly better than a G20 level of influence as it finds its place in the world again. One can only hope the diminishment is short-lived.

[Santander]

The United Kingdom, until it leaves the European Union and moves behind Canada and Australia.

You can't be serious.

Actually, in its current rudderless state, the UK may go through a period where it is unable to exert influence in world affairs to nearly its potential. So no, it's not ridiculous to say that such a thing could happen, at least for a period of time.

At present, the UK is more powerful and influential than even a combined Canada and Australia, let alone either considered individually. Even if reduced to only England, it will remain No. 2 in the Anglophone world for at least the rest of this half century under any circumstances whatsoever. If Britain remains united, it's status as No. 2 is guaranteed for this century.

Influence in the international sphere is not determined by a country's population or economic size, it is determined exclusively by how others perceive and react to you. It is also not measured by potential, but identifiable impact. If you don't understand what I am saying, you need to read my post again. I recommend reading against starting at "Trump" while thinking of how the UK might exercise its influence in the world in the next 5 years and where it have to turn post-EU.

Nobody is talking about a breakup of the UK, which is both unlikely at this point and irrelevant on the world stage outside of Irish affairs.