KABUL, May 20, SPA -- The NATO-led force says an air strike by one of its warplanes has killed eight civilians in southernAfghanistan. The military alliance says in a Wednesday statement theair raid was launched following a clash with a group of 25insurgents in Helmand province. Associated Press quoted the statement as saying that the militants used the civilians as human shields during the Tuesday air strike.--SPA www.spa.gov.sa/666247