This follows a smaller attack Nov. 12, when militants hijacked a convoy that included two Humvees. Taliban members took pictures of themselves atop the Humvee after that incident.
"This incident hasn't affected our supply lines," says Lt. Cmdr. Walter Matthews of US Forces Afghanistan.
But it illustrates why the US has been working tirelessly in recent days – sending its top diplomat and military officer to Islamabad last week – to keep Pakistan focused on militants on its Afghan frontier, not on India.
"We can't solve Afghanistan without solving Pakistan. We are going to have to make sure that India and Pakistan are normalizing their relationship if we are going to be effective in some of other these areas," Mr. Obama said on NBC's "Meet the Press."
After the Nov. 26 terrorist attacks in the Indian city of Mumbai (formerly Bombay), the Indian government said elements in Pakistan were responsible. Since then, tensions have escalated, with the Pakistani Army saying it would relocate forces from its Afghan border to its Indian border if India makes an aggressive move.