Afghan security personnel kill three Nato troops

Three foreign soldiers, two of them British, were killed by Afghan security personnel yesterday in two separate shootings, officials said, bringing the number of such deaths to 16 this year.
An Afghan soldier said to be an officer shot dead the Britons in the southern province of Helmand, while the Nato-led International Security Assistance Force said an "alleged member" of the police killed a trooper in eastern Afghanistan.
More than one in six of the 91 foreign soldiers to have died in the country in 2012 has been killed in so-called "green-on-blue" attacks by Afghan security personnel, significantly raising tensions between Nato forces and their local colleagues.
The attacker was shot dead by coalition forces and officials said another British soldier was severely wounded.
Provincial police chief Abdul Nabi Elham said the gunman was a lieutenant named Gul Nazar from Jalalabad.
Exact details of the incident remained unclear, with accounts differing on whether an argument took place before the shooting started, and whether another Afghan soldier was killed.
ISAF said in a statement that in the second incident its service member was "shot by an alleged member of the Afghan local police as the security force approached an ALP checkpoint".
It did not state the victim's nationality, in line with policy.
A spokesman said the incident happened in Paktika province and the fate of the gunman was unclear. Initial reports indicated two "alleged shooters" were involved, he added.
Monday's deaths brought the number of ISAF service members killed by Afghan security personnel this year to 16.
The previous victims of green-on-blue attacks were six Americans, four French army trainers, an Albanian and two ISAF personnel whose nationality has not been disclosed.
A classified coalition report leaked to The New York Times earlier this year described green-on-blue shootings as a "systemic" problem.
The report put the killings down to a decade of deep-seated animosity on each side, and profound ill-will among both civilians and soldiers on both sides, downplaying the role of possible Taliban infiltrators in such incidents.