General John Allen, who is also the top Nato commander in Afghanistan, said in an interview he was confident a deal would eventually be struck but "whether it's in days or weeks, I don't know."
Many Obama administration officials had hoped for an agreement with Islamabad in time for the Sunday-Monday summit that would end a nearly six-month ban prohibiting trucks in Pakistan from carrying supplies to Nato forces in neighbouring Afghanistan.
Pakistan cut off the ground supply routes after a Nato air strike in November killed 24 Pakistani soldiers, causing a rift with the United States and forcing Nato commanders to look to alternative, most costly routes to supply the war effort.
Asked if he would be disappointed if Pakistan – whose president will attend the summit - didn't strike an agreement before the end of the Chicago talks, Allen said: "No."
"I don't need the (ground supply lines) to be open to support the campaign. But they're helpful to us in sending home our equipment," Allen said.
"We don't want an agreement fast, we want an agreement that's right. So we're going to take the time to get it right."
No repeat of history
The summit comes as Nato allies seek to extricate themselves from a long and costly war without surrendering an unstable, violent Afghanistan back to militants intent on attacking the West.
Allen faces an extremely difficult task, preparing for the withdrawal of most Nato troops by the end of 2014 even as he continues to build up Afghan security forces and move territory under their control. His strategy has been to speed that transition, while enough US forces are still there to help the Afghans when needed.
"Getting as much of that early in the process as we can, so I've got enough combat power here to support (the Afghans) during that early part of the transition's really important," he said.
Allen will complete the removal of all US surge troops this fall, leaving a US force of about 68,000. He is then due to make recommendations for additional troop reductions after the summer combat season, which should reveal how well Afghan forces can fight - and how well Nato fares with a force smaller than the one that claimed swathes of southern Afghanistan in a troop-heavy, counterinsurgency campaign in 2010.
But the presidential victory in France of Socialist Francois Hollande, who has promised to pull French combat troops from Afghanistan this year, raises questions. Hollande repeated that pledge during his inaugural visit to Washington last week and said an extremely limited number of troops would remain to train Afghan forces and bring back equipment beyond 2012.
Allen said Hollande's plans to accelerate the withdrawal would not affect his strategy. "It's a sovereign decision of France. And we'll work with them and to support whatever decision ultimately they make," he said.
Allen said he believes the summit in Chicago will demonstrate a long-term commitment to Afghanistan's military, allowing Nato to avoid making the same mistake that the Soviet Union did after its withdrawal more than two decades ago.
"After the Soviet Union departed Afghanistan, that army survived for a short period of time. But it was unsupported. And unsupported, it eventually collapsed," Allen said, pointing to the ensuing civil war and rise of the Taliban.
"The trajectory we are on right now, I am confident, will prevent history from repeating itself."
COMMENTS (4)
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US should show no interest in NATO route. Ultimately Pakistan will beg it to use the route meanwhile US congress can retaliate and impose 300% duty on Pak textiles . US has so many tools and it has not even started using them.
The US is in no rush to reward the extortion money to Pakistan. Their taxpayers have to get the accounting of $24 Billions already given to Pakistan in the last12 years. The money should not go in the form of military aid but only goods for civilian use in the areas of education, healthcare and infrastructure. Pakistan overplayed their hand and the US called their bluff. The weaker or needier would have to give up. It is an open secret who has the weaker hand? BTW, where is ISPR, it has gone in hibernation like Osama Bin Forgotten!
In other words, Pakistan who is asking $5000 per container, would not get more than $500 per container of NATO supplies.
Pakistan knew well when it asked unrealistically high custom up to $5000 per container.
It is like practice of asking license for a Cannon when all you expect a license just for a Revolver.