listerine cleans virtually your entire mouth. so take your oral health to a whole new level. listerine... power to your mouth. >> pelley: for nearly a year now, syria's dictator bashar al- assad has been attacking his own people to crush a rebellion. today a u.n. official said more than 7,500 civilians have been killed. the city of homs has been shelled nonstop for three weeks, buildings are crumbling, children are trapped in the debris in their own houses. today in a senate hearing secretary of state hillary clinton was asked if assad should be considered a war criminal. >> i think that based on definitions of war criminal and crimes against humanity there would be an argument to be made that he would fit into that category. >> pelley: there are also report today that more than 60 syrian reports today that more than 60