Within 12 years USA will be second most powerful country in world. China is poised to be the most powerful country. In 25 years we don't know if USA will be still second. Just like Great Britain was the most powerful country 200 years ago. Right now USA is more powerful to China military because it is spending more but USA can't sustain this for long because they are earning less. China is becoming more powerful economically and militarily every year and USA can't stop unless there is a direct war with China and the USA wins.