The New York Times reports:

The Obama administration is suspending and, in some cases, canceling hundreds of millions of dollars of aid to the Pakistani military, in a move to chasten Pakistan for expelling American military trainers and to press its army to fight militants more effectively.

Coupled with a statement from the top American military officer last week linking Pakistan’s military spy agency to the recent murder of a Pakistani journalist, the halting or withdrawal of military equipment and other aid to Pakistan illustrates the depth of the debate inside the Obama administration over how to change the behavior of one of its key counterterrorism partners.

Altogether, about $800 million in military aid and equipment, or over one-third of the more than $2 billion in annual American security assistance to Pakistan, could be affected, three senior United States officials said.

This aid includes about $300 million to reimburse Pakistan for some of the costs of deploying more than 100,000 soldiers along the Afghan border to combat terrorism, as well as hundreds of millions of dollars in training assistance and military hardware, according to half a dozen Congressional, Pentagon and other administration officials who were granted anonymity to discuss the politically delicate matter.

Some of the curtailed aid is equipment that the United States wants to send but Pakistan now refuses to accept, like rifles, ammunition, body armor and bomb-disposal gear that were withdrawn or held up after Pakistan ordered more than 100 Army Special Forces trainers to leave the country in recent weeks.

Some is equipment, such as radios, night-vision goggles and helicopter spare parts, which cannot be set up, certified or used for training because Pakistan has denied visas to the American personnel needed to operate the equipment, two senior Pentagon officials said.

And some is assistance like the reimbursements for troop costs, which is being reviewed in light of questions about Pakistan’s commitment to carry out counterterrorism operations. For example, the United States recently provided Pakistan with information about suspected bomb-making factories, only to have the insurgents vanish before Pakistani security forces arrived a few days later.