Because if I have a ton of political power, then I can have a huge effect on th world around me. If I want to go and make sure that in the UN there is more emphasis on the people or the resources then I have a much greater chance of makaing that happen. Also if I hav a military that is to large and there are conflicts going on then it makes my country look suspicous. Finally, if I have a stronger political power than I can make my military jut as strong because of the fact I have that political power in the first place.
