rubble. one western journalist witnessed the battle inside the city describing it as hell on earth. libya's government accusing nato of trying to assassinate moammar gadhafi with an air strike that wiped out a building in his compound in tripoli. nato officials say it was a key command and control center used to launch attacks on civilians. cnn's frederick pleitgren got a tour of this bombed out compound, this is the video. what did you see? >> we saw the building was absolutely flattened. there really wasn't much left except some rubble. it seemed like it was hit by heavy munitions and the blast coming from that area before, christine, indicated these were heavy bombs or missiles launched on to that compound. the interesting thing is that we actually tried to verify the claims of the gadhafi government of that this, in fact, was nothing but a civilian institution, one often used by the way by moammar gadhafi where