Christopher Hitchens provides his thoughts on the subject, and some reviews of books about it.

India is split from Anglosphere in a most basic way--same-sex acts are still defined as Acts aginst Nature (affirmed by Indian Supreme Court as recent as 2007) and criminal.
Thus how will married gays from Anglosphere would be able to even visit India?

I'm also not sure we should be picking our allies on the basis of what language they speak. Japan is a pretty solid ally. So is South Korea.

No sooner would we lay down some overarching philosophical framework for who would act as our friends than the shifting conditions of history would make a mockery of it.

I think capitalist democracy might be a better fit for who our most solid allies are. To the extent that they are not capitalist, or not democratic, they their interests diverge from ours.

Besides, ancient historical ties and grievances are completely irrelevant to the modern world outside the minds of a few past-obsessed fanatics. I doubt anyone on either side of our modern wars gives a fig what the english did with the scottish and french monarchs 500 years ago.

Our friendship with England during WWII had nothing to do with their historical behavior towards us or any ties of blood. After all before the 20th century, when America became too powerful for England to interfere with, England was shutting us out of world trade with their imperial trade restrictions. Before that, they were trying to divide us and prop up the south in our civil war. Before that in the 1812 war, they were burning Washington to the ground in an attempt to drive us all back to chains and serfdom.

The function of these essays is that the word "Anglosphere" is a great shot of narcissism for certain English speakers. After that comes a lot of blah blah blah that covers all intellectual bases.

But even if they wrote an Anglosphere essay every day, it would not make our dirty, Sisyphean, pro-Iranian adventure in Iraq look any better. Meanwhile England itself is joining the coalition of the no-longer-willing.