we know the american public or overwhelmingly against military i want vince and thintervention.ma has put his prelsey on the line bay saying we can't let syria cross this line. >> reporter: the president came from a career as a teacher. so in many ways i would hope in these speech tonight he sees this as a teaching moment. and go back to some of the themes he talked about when he send a nobel peace prize. much as people don't want to see force used, it's inevitable. and it's also inevitable that the u.s. is the strongest nation in the world has to exert that force. and so i think it's a moment to talk to americans who are generally uninterested and uninformed about international relations on why he took the decision that he did. and why he needs public support to maintain the united states position in the would. >> gary thank you very much indeed for that. prefoes or of american government, thank you. now kenya's deputy president is appearing before the international criminal court in the hague shortly accuse asked of crimes against humanity, including murder and persecuti perse