>> reporter: ukee, michael horwitz is a penn political science professor whose expertise in the use of military force. he says that the u.s. air strike against syrian airfield could lead to more stability in the region or it could lead to more u.s. involvement and biggeres lacing. u.s. air strike againstal shay rat airfield could be a turning point in the six year civil war which has killed thousandsness that country. >> it is possible that this strike by you had is punch cross the nose that convince is a sad to back down and try to treat his people more responsibly. >> reporter: u penn science professor michael horwitz say anything is possible in an unstable region. on the other hand it is also possible that assad and russia will escalate, that they will calculate that the you had might not go further, they will continue their campaign against people of syria. >> reporter: thursday u.s. shot 59 tomahawks hawk cruise missiles destroying airfield where bashar al-assad is said to have launched a chemical attack which killed dozens of innocent syrians. >> thinks beginning of the something