after the kentucky derby. this morning, the search for his killer. look, i am vice president of the united states of america. the president sets the policy. i am absolutely vice president joe biden giving us a couple of hints that the white house view of same-sex marriage could be evolving just as a key vote on the matter comes up in the battleground state. this is cnn breaking news. up first we begin with breaking news. a chilling video just released by al qaeda. on it, u.s. hostage warren weinstein, begs president obama to agree to his kidnappers demands or else he will be killed. he was abducted last august in pakistan. the 70-year-old maryland executive has a bunch of health issues, including heart problems. here s part of the video militants posted online. i d like to talk to president obama and ask and beg him that he please accept and respond to the demands of the mujahadin. if you accept the demands, i live. if you don t accept the demands, then i die. it