US needs Pak more than it needs them:

http://www.opinion-maker.org/wp-content/uploads/2011/06/pak-US-relations.jpg

Looks like the the 4th round of war(after Afghanistan-2nd and 3rd round  ) is getting ready
http://www.funcage.com/blog/wp-content/uploads/2010/07/afganistan-bird-helicopter.jpg