Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Afghan Truce Worry: One Militant Could Threaten Peace Process Associated Press WASHINGTON - Hopes for ending America's longest war hinge on maintaining a weeklong fragile truce in Afghanistan that U.S. officials and experts agree will be difficult to assess and fraught with pitfalls. What if one militant with a suicide vest kills dozens in a Kabul market? Or, if a U.S. airstrike targeting Islamic State insurgents takes out Taliban members instead, does that destroy the deal? The agreement, which took effect Friday, calls for an end to attacks around the country, including roadside bombings, suicide attacks and rocket strikes bythe Taliban, Afghan and U.S. forces. But in a country that has been wracked by violence for more than 18 years, determining if the agreement has been violated will be a tough task. And there areother groups and elements in the country that would love to see the deal fall through. "The reason this is a challenge is this is a very decentralized insurgency," said Seth Jones, a senior adviser at the Center for Strategic and International Studies and an Afghanistan expert. "There are going to be a lot of opportunities for any militia commander, element of the Taliban, the Haqqani network and other local forces who don't want to see a deal, to conduct violence." The Haqqani network is an insurgent group linked to the Taliban. Quick analysis is vital According to one defense official, any attack will be reviewed on a "case-by-case" basis. And much will depend on how well U.S. military and intelligence officials in Afghanistan can quickly determine two things:who was responsible for the attack andwhetherany blamecanbe traced to the Taliban, particularly the group's leaders who have been participating in thenegotiations. The Taliban issued a statement late Friday saying their military council hadinstructed commanders and governors to stop all attacks against foreign and Afghan forces. The council has a web of commanders and shadow governors across the country. U.S. officials have made it clear that "spoilers" -- such as militants associated with the Taliban who are not in favor of the peace talks -- could launch an attack in a deliberate attempt to prevent them from happening. Jones said the U.S. military has tried to get a good layout of where all the insurgent groups are operating so it will be able to determine where any attack comes from and who likely was responsible. And U.S. military officials said they were prepared to make quick assessments. .