kimberly alcott has this update from the white house. it was the 1st conversation for china as president. she's in pain and us president joe biden, since their historic meeting last november. and march the latest effort between the 2 leaders of the world super powers to try and diffuse tensions with an hour and 45 minute phone call. we are told, according to the white house, and we are also told that the conversation was candid and constructive. there was a lot to discuss including areas of collaboration on the issues of artificial intelligence, counter, narcotics, and even climate change. but well, there were areas of collaboration and cooperation. there were also significant areas of difference. president biden also emphasize the importance of maintaining peace and stability across the taiwan strait. and he reaffirmed the importance of the rule of law and for human navigation. in the south, tennessee, he raised concerns over the p r. c. support for russia's defense industrial base, and its impact on european and trans atlantic security