A militant attack has claimed the lives of six US-led soldiers in southern Afghanistan, bringing the death toll of foreign soldiers in the war-torn country closer to 700 so far this year.The international military coalition, ISAF, said in a statement that the incident happened Sunday but did not give further details. The latest incident brings the death toll for foreign soldiers based in Afghanistan to nearly 690 this year. 2010 has been the deadliest year of the nine-year war in Afghanistan, with casualties among civilians and foreign troops at record levels, mainly due to an increase in Taliban attacks. As casualties have risen in Afghanistan over the past few months, public opinion has begun turning against the war in the United States and other countries.