investigation. i will talk with former assistant director, a former fbi agent from los angeles. president obama defends his view that climate change is a greater threat than terrorism. he told cbs news quebec climate change could lead to a rise of violent extremism. >> when people are desperate, lack food food, they're not able to make a living, that is when ideology's arise better dangerous. lou: the president stunned everyone in his extempore diaz lecturer's you cannot build a border ball to stop climate change. you cannot build a border wall to stop by the change. make of that what you will i cannot make sense of this battle. a new poll shows republican for runner is the front runner by a wide margin. donald trump 20-point lead this is the biggest lead yet not bad considering every major strategist as declared trump to be not serious or he would fade after the first month now they are sputtering against the front runner. we will talk about that with our political panel. the top story the fbi finally admits the san bernardino massacre was a back the tears of the deadliest act

director of the fbi in new york, gill gavin. former fbi agent bobby ciccone from los angeles. president obama defending his view that climate change is a greater threat to americans than terrorism. president obama told cbs news that, quote, climate change could lead to a rise in violent extremism. i have no idea what that was, our apologies. and the president stunned just about everyone in one of his extemporaneous lectures declaring that you can't build a border wall to stop climate change. i know. let me repeat the president's sentence, you can't build a border wall to stop climate change. make of the president's statement what you will, i can't make sense of it at all. and turning to the quantifiable, a new poll shows the republican front-runner is indeed the front-runner and by a wide margin. donald trump has a 20-point lead against his next closest rival. this is his biggest lead yet in the republican race, not bad considering nearly every major strategist and political savant declared trump to be unserious or saying he would fade after the first months of his candidacy.