since the assault that killed four americans. this time a car bomb exploded near a libyan foreign ministry building. the building that had been the site of the u.s. consulate some 50 years ago. today's blast wounded a few people nearby, but no reports of any deaths. nobody immediately claimed responsibility, either. but libyans prime minister points out that investigators have linked islamic militants to similar car bomb blasts. last year's terror attack on this very date, killed four americans, our ambassador, chris stevens among them. and one year later, many lawmakers say the u.s. has yet to hold the attackers accountable. catherine herridge in d.c. with the rest of this. catherine? >> well, shepard, this action memo signed by under secretary of state patrick kennedy, nine months before the assault, green lighted the benghazi operation. and a seasoned diplomat tells fox news kennedy would not have acted alone. he needed cover from executives on the state department's seventh floor. >> i would be amazed if he had not consulted at least