What you demonstrate, then, is that Pakistan lacks the spirit to be a true ally; the failing is not America's.
This is incorrect statement in light of views of pak military and government elite that I have heard.
My personal views are different, but then, I am a civilian ordianry man perhaps not too unlike your position in America. We can talk but people in power may give two hoots.
Let me know if it is not true for you.
So from Pak military men and government elite Here are few scenarios for your consideration.
1. How do you think USA would have reacted if UK was selling weapons to Cuba during cuban missile crisis?
2. How do you think UK would have reacted if Australia was arming Argentina during falklands war.
Now contrast this to the game play by USA when it comes to India and Pakistan's intense rivalry. While Pakistan was HUGE ally during commie invasion of Afghanistan, Indian army went ahead and occupied Siachin.
And US just stood around and did nothing to warn India to take miltiary out of the glaciar and use negotiated settlement.
Many in top echelons in Pak government think about special civilian nuclear deal with India as a nutcase move by USA. while not even offering something similar to Pakistan perhaps with more safegaurds.
There was no need to involve India in Afghanistan at all. USA should have known that in the 40 and 50s Indian supported Afghanistani government's anti-Pakistan rhetoric.
So as per these ruling elite of Pakistan,
When you chose allies
then you do not chose your ally's sworn enemy as your ally too.
There are times you have to make choices,
And USA has consistently failed in making sure not to take precautionary measures.
so my friend,
you can find many examples of Pakistan deceiving USA
But as per the ruling elite of Pakistan Americans like yourself tend to ignore 100s more when Pakistan totally helped USA.
So I urge you that as an American you should try to limit such accusatory threads
and in order to safegaurd American interests in the region, try to spread the message of hope and friendship.
Hope you understand.
peace