with the opposition closing in, gadhafi appears to be digging in. one american evacuee told cnn he saw carnage in tripoli. he said "the army was using automatic rifles against little kids that were carrying nothing more than pebbles." little kids, he said. i want to play again what gadhafi said today in tripoli's green square. listen. >> translator: we are prepared to break any aggression by the people, the armed people and the time will come when all the ammunition warehouses will be open for the people to defend the country. >> how brutal will the end game get and what will it take to stop gadhafi? i spoke with bob bear, intelligence columnist and the author of "the company we keep." he's a former cia officer. and also i spoke with professor assad, a former gadhafi aide and now a history professor at western connecticut sate university. in the late '70s, he took part in a plot to overthrow gadhafi. the plot was discovered and the