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5 US troops die in blasts in southern Afghanistan (AP)

United States Marines from Bravo Company of the 1st Battalion of the 2nd Marines watch the explosion after calling in an airstrike during a gunbattle as part of an operation to clear the area of insurgents near Musa Qaleh, in northern Helmand Province, southern Afghanistan, Friday, July 23, 2010. (AP Photo/Kevin Frayer)AP - Five American troops died Saturday in bombings in southern Afghanistan where international forces are stepping up the fight against the Taliban, officials said.