I think no country in the world should be given full power, as they will abuse it. Unfortunately, US as an example had shown the world that they are good at abusing-look at banking crisis (abusing trust and laws) and interventions into other countries.

x-makki77, can you please give an example of one country where US have already interviened and helped the country grow etc as you mentioned I quote
"Without help from the USA, these countries will be unable to develop and grow to their maximum potential".

I like regular americans (and other nationalities as a matter of fact). They are friendly and very nice people.
However politicians in every country are the same.

Live and let live as said.