US will still dominate, but its influence is impaired. Predicting what is happening in 100 years is almost an impossible task. The world is changing fast. I am not convinced by what this guy says. He got quite a few facts wrong, about population growth, and immigration potentials ...
http://finance.yahoo.com/tech-ticker/article/237808/America-in-Terminal-Decline-No-Way-Says-Geopolitical-Expert-George-Friedman?tickers=%5EDJI,%5EGSPC,SPY,DIA,TLT,TBT,UDN