. >> we are joined by glenn davis, the highway safety manager of the department of transportation. according to "american journal of epidemiology" the number of car crash system with pot in their systems increased three fold from 1999 to 2010. do you believe marijuana is to blame? >> i believe that that shows that marijuana certainly is a substance that is used did is a contributors to the cashes. according to a study by the pacific institute of research and evaluation. a 20-year-old drunk driver is more likely to be in a fatal crash - it's 20 times more likely than someone not drinking, at 44, nine times more likely. driving while high doesn't seem to have nearly as much of an effect. is driving after using marijuana less dangerous than drunk driving? >> i don't think so. marijuana is an impairing substance like alcohol. if people abuse it or use it to the point of impairment, it's equally dangerous. >> how reliable - how do you enforce it? how reliable are field sobriety tests. other studies show as little as 30% of those that smoke marijuana fail the test. how do you figure out

glenn davies has headed to moscow to ask for the russians' help. >> we'll be talking about where we stand in the six-party process and how best to work together to deep north korea focused on what it is it needs to do in order to get back to its obligations and commitments. >> u.s. secretary of state john kerry made his own push to restart the process earlier this month during visits to seoul and beijing. american negotiators insist the north koreans must take concrete steps towards dismabtleing their nuclear program first. the six-party talks have been stalled for more than five years. >>> ministers for free trade talks in the asia pacific are packing their bags to head home. yuko fukushima has the latest on this. we've heard about long and intensive discussions behind closed doors. >> you're right, gene. a lot of one and one and group discussions were held at the ministerial meetings and even before that meeting in singapore japan and u.s. were holding working level talks to narrow their differences. but, ministers from 12 countries have ended their latest round of transpacific partners

e-nuclearization we have a special envoy, bob kane, dedicated to human rights and a special representative, glenn davies, who looked at the larger policy. at times, people forget as we talk about uranium enrichment, theiles, proliferation, plight of the people of north korea. that is absolutely not the case in the white house as we look at this issue holistically. we continue to be concerned that. we want to bring the north korean people the same peace, and respectfreedom, for human dignity that their brothers and sisters in the south and joy. -- enjoy. look is a sense when you at the broader arc of history that the forces, the trends of history are inevitable. the president spoke of this at the university of foreign studies during his state visit. you touched on this during his own speech during the december visit. our support in particular for the unification strategies, which themselves are jordan by desire that the north korean people would one day be free of the situation that they are in continue toe will create an environment and we believe we have put an alternative path for the leadership of jo

special envoy, bob king who is dedicated to human rights issue, and a special representative, with glenn davieslook at the larger, broader north korea policy. at times, you know, people forget as we talk about uranium enrichment, plutonium and warheads and missiles, proliferation, of the plight of the people of north korea. let me say first of all, at his absolute not the case in the white house as a look at this issue oldest particularly. we continue to be concerned about the human rights situation in the dprk. we continue to want to work to bring the north korean people the same peace and prosperity and freedom and respect for human dignity that their brothers and sisters in the south enjoy. there is a sense, again when you look at the broader arc of history, that the forces, the trends of history are inevitable. the president spoke to this in his speech at the university of foreign studies during his state visit. the vice president touched on this in his own speech during his december visit on our support in particular for president park's unification strategy, which themselves are driven by

-- we have a special envoy dedicated to the cumin rights issue, a special representative with glenn davies who looks at the larger, broader north korean policy. at times people forget as we talk about uranium enrichment and plutonium and warheads and missiles and proliferation of the plight of the people of north korea. first of all that is absolutely not the case in the white house as we look at this issue holistically. we continue to be concerned about the human rights issue at dprk. we continue to want to work to bring the north korean people the same peace and prosperity and freedom and respect for human dignity their brothers and sisters in the south enjoy. the trends of history are inevitable to the president spoke of this at the university of foreign studies during his state visit. the vice president touched on this in his own speech during his december visit. support in particular for president pack's unification strategy which themselves are driven by a desire, the north korean people would one day be free of the situation they are in right now. we will continue to create an envir