Instead, the danger lies in what the border closing says about the Pakistani military's ability to call the political shots two years after the restoration of civilian rule, their ongoing ambivalence about the NATO effort in Afghanistan, and Pakistan's complicated interests in Afghanistan.
"It’s been this way for the longest time: they help us, they work against us, whether its ground troops or [Pakistani intelligence]," says Marvin Weinbaum, who was a Pakistan and Afghanistan analyst at the State Department until 2003 and is now a scholar at the Middle East Institute in Washington. "I don’t think it’s possible to make a general statement here. There’s evidence of Pakistan both facilitating our operations and facilitating the insurgents."
As the US public has grown more aware that Pakistan, which is receiving about $2 billion in US aid this year, provides support to Taliban units who kill both US soldiers and Afghan security forces across the border, anger at America's erstwhile ally has grown on the home front.