elizabeth ii. and bucking hingham palace with charles iii will soon deliver his message to a nation that s grieving. i m anderson cooper with cnn s special coverage along with don lemon, who s at buckingham palace for us. don. reporter: anderson, a day after the loss of his beloved mother, king charles is about to take a huge st. paul in the transition from prince and heir to his royal majesty, as a matter of fact, as he addresses the united kingdom and the world. he arrived at buckingham palace from scotland just a few hours ago. he s greeting people who gathered to pay their respects. he stopped to look at the many bouquets of flowers laid in tribute of queen elizabeth. accompanied by his wife, the new queen supreme court, camilla. just a short while ago he hosted prime minister liz truss, their first formal audience sitting starting his reign. i am joined now here at buckingham palace by my colleagues, the royal correspondent max foster and cnn s chief international corr