CthulhuFhtagn
Banned
Of these four, only India deserves consideration. It is not wealth and economic power that matters in a Security Council but military power and (more imporantly) the will to use it. Germany and Japan remain completely irrelevant. Brazil comes closer, perhaps, but only India really qualifies.
I guess you're right. Right now, India is the only one of the four that's strong enough (and the only one with nukes).
But Germany and Japan both spend more on their respective armed forces than India, which seems to imply that both countries are more than capable of building up a UNSC-level military. Their respective nuclear programs also show that they could build nuclear weapons. If they were to rearm, I think they would definitely qualify, although I'm pretty sure that France and China would freak out a little.