KABUL, Afghanistan, Aug 20, SPA - Coalition troops clashed with insurgents in two battles Saturday that left four U.S. and one Afghan soldier dead and six other Americans wounded, officials said. The fighting was reported to be some of the heaviest in recent months and came as war-battered Afghanistan celebrated its independence day. During a clash against Taliban militants in eastern Kunar province, three U.S. soldiers were killed and three others wounded, said U.S. military spokesman Col. Tom Collins. In southern Uruzgan province, an American and an Afghan soldier was killed and three other Americans wounded in a four-hour clash with more than 100 insurgents, according to a NATO statement. The troops used artillery and air support to repel the insurgent attack, a NATO statement was quoted as saying by the Associated Press.--SPA www.spa.gov.sa/383833