Um, if that were the case, we would just do to Pakistan what we're doing with Iran and Korea. Alienating them, doing bad PR against them, making them look like boogy men, and aligning them in the axis of evil.
Please face the facts. There is an extremist movement in the region - a bunch of crazies think they can put up a khalifah they've been dreaming of...THEY are the ones who stand the most by gaining the nukes.
Exactly what you are suspicious of America - that we just want to take over some nuke nation - you're so blind that you can't even see that possibly a group of muslim crazies may want the same thing!
there is difference Pakistan is already declared nuclear nation, that different approach than Korea and Iran who have ambitions to get nuclear. in recent history you will see the US tactics of war.
they went into Iraq after making sure they dont have single WMD for possible backlash from Iraq. with no fly zone, UN Inspections, sanctions 10 year they made sure you its clean of WMD and then went in safely.
for Pakistan they cant adopt the same techinique, they cant even impose UN sanctions as Pakistan didnt sign CTBT, hence didnt break any nuke law. plus puttin sanction on a nuclear armed nation is not going to work. direct all out war will also not work.
Pakistan played well with them during building nukes and US couldnt stop it by one or the other reasons.
US want to re use it Mujahideen plan against soviets, now against Pakistan but missing all dimention in the process. Though the paid fanatics at the top has done much damaged to Pakistn, but its not winnable for US. Pak nukes only required by US cause its possible use against Israel! they want to even remove far far possiblity against Israel. India is into this game for own purpose and its advantages in regards to China and Pakistan.
anyway its un winnable war against Pakistan by US and its proxies, sure it had created problems for Pakistan, not to the point that it will be easy ride for US or India.
simple logic, if ill quiped afghanistan can fight the US for years and US not getting anywhere near to any results, they really think they can win and take over Pak nukes with such tactics?
and dont be shallow in your thinking what US wants... out of it!
why US is in Iraq, Afghanistan(a war torn country with high poverty)
simple answer all middle east, they want strategic control over the whole region for own policy of imperialism