Washington: The rise in attacks by allied Afghan forces on US and NATO soldiers in Afghanistan represents a "systemic" problem and are not rooted in isolated incidents, according to a classified coalition report in Saturday's New York Times.
The report emphasises the killings are the result of a decade of contempt that each side has for each other, and profound ill will among both civilians and militaries on both sides. It downplayed the role of Taliban infiltrators in the incidents.
In the latest incident, four French soldiers were killed and some 15 wounded on Saturday when a renegade Afghan soldier opened fire on them in a base in eastern Afghanistan.
Between May 2007 and May 2011 at least 58 US and NATO personnel were killed in 26 attacks by Afghan soldiers and the police, the classified 70-page report said, according to The Times.
It includes an April 2011 incident in which an Afghan Air Force colonel killed eight US officers and a contractor with shots to the head inside their headquarters.
A spokesman for the US-led coalition in Kabul told The Times that the attacks by Afghan forces were isolated incidents, but did not comment directly on the report.
However the report, prepared for a subordinate US command in eastern Afghanistan, takes a much harsher view.
"Lethal altercations are clearly not rare or isolated; they reflect a rapidly growing systemic homicide threat (a magnitude of which may be unprecedented between 'allies' in modern military history)," the report said, according to The Times.
Official NATO statements downplaying the incidents "seem disingenuous, if not profoundly intellectually dishonest," said the report.
"The sense of hatred is growing rapidly," an Afghan Army colonel said, according to The Times, who described his troops as "thieves, liars and drug addicts," but said the US troops were "rude, arrogant bullies who use foul language."