The report on the impact on children of Afghanistan's armed conflict shows that all sides to the fighting - which pits the army and allied international forces against the Taliban and other insurgents - have committed numerous violations and abuses against the young.
The Taliban is persisting in using children as suicide bombers, while international and Afghan forces have inadvertently killed dozens of children as they attempt to beat back the insurgency, according to the report from Secretary-General Ban Ki-moon, which detailed several examples.
"On 16 May 2008, a boy of approximately 12 years of age approached a joint International Security Assistance Force (ISAF)-Afghan National Army foot patrol in Panjwayi district, Kandahar province spreading his hands," the report says. "The suicide vest he carried is believed to have been remotely detonated."
In November last year, a suicide bombing that targeted parliamentarians on a road in northern Baghlan province led police and bodyguards to fire indiscriminately. Various independent reports indicated that the approximately 70 dead included 52 schoolchildren.
"Insurgent influence has intensified in areas that were previously relatively calm, including in the provinces closest to Kabul [the Afghan capital]. The number of security incidents rose to 983 in August 2008, the highest number since the fall of the Taliban in 2001," the report adds.
It also notes that since the completion of the Government's demobilization and reintegration of 7,444 under-age soldiers in 2003, there has been no monitoring of children vulnerable to further recruitment or re-recruitment.
A study of suicide attacks by UNAMA documented cases of children reportedly used as suicide bombers by the Taliban. Most were between 15 and 16 years of age and were tricked, promised money or forced to become suicide bombers.
Mr. Ban expresses concern in the report that there are children in the ranks of the Afghan National Auxiliary Police, conducting patrols, guarding police posts and carrying out checkpoint duties. In the south, two recently recruited 14-year-old boys were successfully released after an intervention with the authorities.
The Secretary-General also describes a number of disturbing cases involving children - especially boys - being sexually abused and exploited by members of the armed forces and armed groups. One case involved two police officers who were arrested for sexually abusing a 15-year-old boy in a south-eastern province, but later released after bribing the authorities.
"I encourage the Government of Afghanistan to implement more fully laws and programmes to prevent and punish sexual violence and to support victims, monitor grave sexual violations against boys as well as girls and work with my team in Afghanistan to study ways and means of combating harmful practices," he writes.