Three US soldiers killed by roadside bomb in Afghanistan  Three
killed when roadside bomb struck US convoy after three Afghan
civilians killed in market bomb earlier Tuesday   • Jump to
comments () A US marine on patrol in Helmand province,
Afghanistan. Photograph: Rafiq Maqbool/AP  A roadside bomb
struck a US convoy in southern Afghanistan on Tuesday, killing
three American troops, while a motorcycle bomb in a crowded
village market killed at least three Afghan civilians, officials
said.   Collins originally said four US troops were killed in
the blast, but Capt Luca Carniel later said Nato had revised the
death toll to three US service members.  The attack follows a
truck bombing a day earlier on a Nato outpost in Helmand
province that killed three Georgian soldiers. So far this year,
58 international troops have been killed in Afghanistan,
according to an Associated Press count. Of that tally, 44 are US
service members.    Today's best video  Today in pictures