What will happen is China wants war with us over Pakistan?

So after Bin ladens death pakistan has been embarred and accused of harboring Osama (i think they did), and the US has been really tough with Islamabad.. and China pretty much said, if u mess with Pakistan u are messing with China! what does this mean? are we in the brink of war? idk, im just hoping not because i dont think we can handle that..now if we were not a broken military right now then ok, but i feel like morale and technology arent so good for us at this time..is the US going down in a few years?