NEW : General puts heat on president , secretary of defense . U.S. commander in Afghanistan says more troops needed or war could be lost . Score: 6 Support for Afghan war hit all-time low in opinion poll released last week .
NEW : General puts heat on president , secretary of defense . U.S. commander in Afghanistan says more troops needed or war could be lost . U.S. has 62,000 U.S. troops in Afghanistan ; other allies contribute 35,000 more . Support for Afghan war hit all-time low in opinion poll released last week .