I agree with that. I agree with that. I think that one of the problems that we have faced in the world is that we are so much more powerful than any single nation has been in relationship to the rest of the world than at any time in history, that I know about, anyway.
The speaker is confident in their country
We can assume they are confident because they say their country is the most powerful. 
( z1 confident :ARG1 ( z2 person :ARG0-of ( z3 speak ) ) :ARG2 ( z4 country :poss z2 ) )