To be fair, pointing out the obvious is a hobby for many Christians too.
"Declining influence" may not be a bad thing, unless one believes (as neocons & many Progressives do) that it is our divinely-appointed duty to manage the world for the good of mankind.
It's debatable whether our peacetime military "dominance" was ever all that it was cracked up to be. Think of Red China, Korea, pesky little Cuba, Vietnam, numerous other client regimes, & now Iraq. Did we ever dominate that much? Offhand, I think postwar Japan & Europe were the only American reconstruction projects that "worked."
I think it's time to give isolation (minus disastrous protectionism) another try.
"The National Intelligence Council (NIC) predicts China, India and Russia will increasingly challenge US influence." These people have a blinding grasp of the obvious. I didn't read the article, but they probably predict that Africa and the Middle East will be unstable, too. The NIC sure has a pretentious name for pointing out the obvious world situation an eighth grader ought to know. Just in case their predictions don't come true, they hedge with "outcomes are not inevitable" so they don't get blamed for making bad predictions.