Al-Qaeda's list of 22 tips for dodging drone attacks - including at least one believed to originate with Osama bin Laden - has been found hidden inside a manila envelope in a building abandoned by Islamists in Mali.
While some of the tips are outdated or far-fetched, taken together, they suggest the Islamists in Mali are responding to the threat of drones with sound, common-sense advice that may help them to melt into the desert in between attacks, leaving barely a trace.
"These are not dumb techniques. It shows that they are acting pretty astutely," said Col Cedric Leighton, a 26-year-veteran of the United States Air Force, who helped set up the Predator drone program, which later tracked Osama bin Laden in Afghanistan.
"What it does is, it buys them a little bit more time - and in this conflict, time is key. And they will use it to move away from an area, from a bombing raid, and do it very quickly," he said.
The success of some of the tips will depend on the circumstances and the model of drones used, Col Leighton said. For example, from the air, where perceptions of depth become obfuscated, an imagery sensor would interpret a mat stretched over the top of a car as one lying on the ground, concealing the vehicle.
New models of drones, such as the Harfung used by the French or the MQ-9 "Reaper," sometimes have infrared sensors that can pick up the heat signature of a car whose engine has just been shut off. However, even an infrared sensor would have trouble detecting a car left under a mat tent overnight, so that its temperature is the same as on the surrounding ground, Col Leighton said.
Unarmed drones are already being used by the French in Mali to collect intelligence on al-Qaeda groups, and US officials have said plans are underway to establish a new drone base in northwestern Africa.
The US recently signed a "status of forces agreement" with Niger, one of the nations bordering Mali, suggesting the drone base may be situated there and would be primarily used to gather intelligence to help the French.
The author of the tipsheet found in Timbuktu is Abdallah bin Muhammad, the nom de guerre for a senior commander of al-Qaeda in the Arabian Peninsula, the Yemen-based branch of the terror network.
The document was first published in Arabic on an extremist website on June 2, 2011, a month after bin Laden's death, according to Mathieu Guidere, a professor at the University of Toulouse.
Prof Guidere runs a database of statements by extremist groups, including al-Qaeda in the Islamic Maghreb, and he reviewed and authenticated the document found by the AP.
The tipsheet is still little known, if at all, in English, though it has been republished at least three times in Arabic on other jihadist forums after drone strikes took out US-born cleric Anwar al-Awlaki in Yemen in September 2011 and al-Qaeda second-in-command Abu Yahya al-Libi in Pakistan in June 2012.
It was most recently issued two weeks ago on another extremist website after plans for the possible US drone base in Niger began surfacing, Prof Guidere said.
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The document includes advice such as "hide under thick trees" (believed to be bin Laden's contribution), and instructions for setting up a "fake gathering" using dolls to "mislead the enemy".
Found by the Associated Press in a building in Timbuktu, the ancient city occupied by Islamists last year, the document is believed to have been abandoned as extremists fled a French military intervention last month. It is a Xeroxed copy of a tipsheet authored by a Yemeni extremist that has been published on some jihadi forums, but that has made little appearance in English.
The list reflects how al-Qaeda in the Islamic Maghbreb anticipated a military intervention that would make use of drones, as the war on terror shifts from the ground to the air.
The document also shows the coordination between al-Qaeda chapters, which security experts have called a source of increasing concern.
e are no longer dealing with an isolated local problem, but with an enemy which is reaching across continents to share advice," said Bruce Riedel, a 30-year veteran of the CIA, now the director of the Intelligence Project at the Brookings Institute.While some of the tips are outdated or far-fetched, taken together, they suggest the Islamists in Mali are responding to the threat of drones with sound, common-sense advice that may help them to melt into the desert in between attacks, leaving barely a trace.
"These are not dumb techniques. It shows that they are acting pretty astutely," said Col Cedric Leighton, a 26-year-veteran of the United States Air Force, who helped set up the Predator drone program, which later tracked Osama bin Laden in Afghanistan.
"What it does is, it buys them a little bit more time - and in this conflict, time is key. And they will use it to move away from an area, from a bombing raid, and do it very quickly," he said.
The success of some of the tips will depend on the circumstances and the model of drones used, Col Leighton said. For example, from the air, where perceptions of depth become obfuscated, an imagery sensor would interpret a mat stretched over the top of a car as one lying on the ground, concealing the vehicle.
New models of drones, such as the Harfung used by the French or the MQ-9 "Reaper," sometimes have infrared sensors that can pick up the heat signature of a car whose engine has just been shut off. However, even an infrared sensor would have trouble detecting a car left under a mat tent overnight, so that its temperature is the same as on the surrounding ground, Col Leighton said.
Unarmed drones are already being used by the French in Mali to collect intelligence on al-Qaeda groups, and US officials have said plans are underway to establish a new drone base in northwestern Africa.
The US recently signed a "status of forces agreement" with Niger, one of the nations bordering Mali, suggesting the drone base may be situated there and would be primarily used to gather intelligence to help the French.
The author of the tipsheet found in Timbuktu is Abdallah bin Muhammad, the nom de guerre for a senior commander of al-Qaeda in the Arabian Peninsula, the Yemen-based branch of the terror network.
The document was first published in Arabic on an extremist website on June 2, 2011, a month after bin Laden's death, according to Mathieu Guidere, a professor at the University of Toulouse.
Prof Guidere runs a database of statements by extremist groups, including al-Qaeda in the Islamic Maghreb, and he reviewed and authenticated the document found by the AP.
The tipsheet is still little known, if at all, in English, though it has been republished at least three times in Arabic on other jihadist forums after drone strikes took out US-born cleric Anwar al-Awlaki in Yemen in September 2011 and al-Qaeda second-in-command Abu Yahya al-Libi in Pakistan in June 2012.
It was most recently issued two weeks ago on another extremist website after plans for the possible US drone base in Niger began surfacing, Prof Guidere said.
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