Why choose when you can combine?

I am just wondering as an outsider to the American style of politics, what is really the most important factor and policy making decision by America that should concern me, internal policy or foreign policy, i am certain its foreign policy. Ok if thats the case, now that we have Senator Hilary Clinton as the secretary of state, perhaps the second most powerful official in Washington then what should we expect of the American foreign policy, i mean the Obama foreign policy? Hilary is in support of an imminent attack on Iran, a sovereign Nation that has not or plans to attack any Nation whose only offense is the fact that it is an emerging powerful Islamic country which poses a threat to the Zionist agenda of global domination. So my question is why choose in the first place when you could have combined?