WASHINGTON, (Reuters) – Pakistan has been  double-crossing the United States by secretly supporting the  Taliban while taking massive U.S. aid, the New York Times said  yesterday, citing documents leaked by the group WikiLeaks.

The White House responded with a strong condemnation of the  leak, saying it could threaten national security and endanger  the lives of Americans and those of its allies.

“These irresponsible leaks will not impact our ongoing  commitment to deepen our partnerships with Afghanistan and  Pakistan,” President Barack Obama’s National Security Advisor  Jim Jones said in a statement.

Obama is sending thousands of additional troops into  Afghanistan to combat a resurgent Taliban, despite disquiet at  home over rising military casualties and debate within his own  administration about the right way to fight the 9-year war.

The New York Times reported the 91,000 documents,  collected from across the U.S. military in Afghanistan, showed  Pakistan actively collaborating with the Afghan insurgency.

“The documents … suggest that Pakistan, an ostensible  ally of the United States, allows representatives of its spy  service to meet directly with the Taliban in secret strategy  sessions to organize networks of militant groups that fight  against American soldiers in Afghanistan, and even hatch plots  to assassinate Afghan leaders,” the Times said.

The documents were also made available to Britain’s The  Guardian newspaper and German weekly Der Spiegel.

A summary of the documents is available at  http:// www.wikileaks.org/wiki/Afghan_War_Diary,_2004-2010,  along with a link to the webpage where WikiLeaks said the  documents would be posted later on Sunday.

Jones said the documents covered a period from January 2004  to December 2009, when Obama launched his new Afghan strategy.

“President Obama announced a new strategy with a  substantial increase in resources for Afghanistan, and  increased focus on al Qaeda and Taliban safe-havens in  Pakistan, precisely because of the grave situation that had  developed over several years,” Jones said.

“We know that serious challenges lie ahead, but if  Afghanistan is permitted to slide backwards, we will again face  a threat from violent extremist groups like al Qaeda who will  have more space to plot and train,” he said.

WikiLeaks promotes the leaking of information to fight  government and corporate corruption. Earlier this year it  leaked a classified video showing a 2007 helicopter attack that  killed a dozen people in Iraq, including two Reuters  journalists.

Pakistan’s ambassador to the United States Husain Haqqani  said leaking unprocessed reports from the battlefield was  irresponsible.

“These reports reflect nothing more than single source  comments and rumors, which abound on both sides of the  Pakistan-Afghanistan border and are often proved wrong,” he  said in a statement.
There have been other claims of Pakistani meddling in  Afghanistan. Earlier this month the London School of Economics  published a report that strongly suggested support for the  Taliban was the “official policy” of Pakistan’s Inter-Services  Intelligence (ISI) agency. Pakistan strongly denied the claim.