Three more NATO soldiers were killed Wednesday in what is fast becoming an epidemic of Afghan soldiers - sometimes insurgents in disguise - murdering their western mentors.
So far, 45 NATO troops have died this year in "green-on-blue" shootings. None were Canadian.
U.S. soldiers throughout the country have taken to arming themselves inside their own camps against the elusive, unexpected threat, reports say.
Col. Greg Smith said 950 Canadian soldiers and trainers in Afghanistan are taking precautions.
