Juan Cole informs us of present Afghan leader Hamid Karzai's comments about which side Afghanistan would support in a war between the US and Pakistan. Several things.
First, that even mentioning the possibility of a US war with Pakistan is an indication of just how badly relations have deteriorated between the Americans and Pakistan.
Second, that the government of Afghanistan and its leader, essentially products of US intentions, have threatened to turn on their patron, is an indication of how badly things have deteriorated there.
This also follows on the heels of threats from the head of Pakistan's army to meet US incursions into Pakistan's tribal areas with force. Some South Asian media is reporting that he reminded the US that Pakistan is a "nuclear power."
Third, much of this seems to follow the raid earlier this year by US special forces that killed Osama bin Laden. Everything about that from the fact that OBL was embarrassing for Pakistan, from the lack of consultation to the overt presence of that terrorist in a military town. There's the issue of countless US drone and special forces strikes against the Taliban on Pakistani territory as well as the wheels within wheels of Pakistan's Inter-services Intelligence group and its links to militants. More broadly, Pakistan is developing strategic linkages with China including large orders of Chinese military hardware.
Pakistan's leaders are not dumb. They understand that their immediate security concerns are local and regional and rely on either on good or at least accommodating relationships with internal malcontents, neighbours, or in the case of nuclear India, something akin to a mutually assured destruction (MAD) pact.
The US war against Pashtun militants has not benefited Pakistan and indeed often humiliated that country and created serious domestic security problems. Pakistan is now firmly asking the US to leave. It's probably time they did as it would be unpleasant and bloody for all concerned, especially the civilians, should things get worse.
I wonder if the Obama people are doing a cost-benefit analysis on the bin Laden raid...they might have nailed the monster but cost themselves a major regional ally and a war.