Russia isn't any kind of a major power. It's what McCain said it was, a gas station pretending to be a super power. All it has is some left over nukes, and it's doubtful many of them even still work. South America is too corrupt to ever become a super power, the closest would be Brazil, and they lack the organizational capacity to sustain a super power infrastructure.
India is quickly replacing Red China as a production center. Red China can't exist without stealing tech and capital from the U.S. and Europe. IT is sliding back down to shithole status. The U.S., however does need to double and triple its military spending if it wants to maintain real peace; otherwise another major war will break out as the Red Chinese use foreign invasions to offset its internal decline.