Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Afghan Soldier Kills 3 British Troops VOA News 13 July 2010 An Afghan soldier has killed three British troops during a joint patrol in southern Afghanistan. Afghan Defense Ministry spokesman Mohammad Zaher Azimi confirmed the attack Tuesday in Helmand province. Officials say at least two other British soldiers were wounded, and the Afghan soldier escaped after the attack. In a statement Tuesday, NATO and U.S. forces commander General David Petraeus called for unity in the fight to bring security to Afghanistan. Petraeus said Afghan and NATO troops must ensure the trust between the forces remains solid to defeat common enemies. In Kabul, a spokesman for Afghan President Hamid Karzai expressed regret for the attack. Meanwhile, NATO Secretary-General Anders Fogh Rasmussen says setting a timetable to withdraw troops from Afghanistan could encourage the Taliban to step up attacks on coalition forces. In an interview published in Britain's Daily Telegraph newspaper Tuesday, the NATO chief said he could not give an exact date when international forces would leave the war-torn nation and called on coalition partners to keep their soldiers there as long as necessary. Rasmussen also warned that an early departure from Afghanistan could allow the Taliban to return to power and risk destabilizing neighboring Pakistan. On Monday, an Afghan human rights group said more than 1,000 civilians have been killed so far this year in Afghanistan, making it the most violent year in the nation's nine-year war. In a report, The Afghanistan Rights Monitor says that about six Afghans were killed and eight others wounded each day in conflict-related incidents during the first six months of 2010. The report says the recent surge of U.S.-led NATO forces is not discouraging the Taliban insurgency, but is instead "emboldening" militants who see the move as "the last push before exit." Some information for this report was provided by AP and Reuters. .