Gunmen wearing Afghan military uniforms shot dead two NATO soldiers on a base in the country's south on Wednesday, the coalition said, in the latest insider attack on foreign troops, AFP reports.
So-called "green-on-blue" attacks- when Afghan soldiers or police turn their guns on international troops, have been a major problem during NATO's long years fighting alongside Afghan forces.
Wednesday's attack in the volatile province of Helmand is the first such incident since April, highlighting long-simmering tensions between Afghan and foreign forces.