US President-elect Joe Biden has said that he wants to make sure that "China plays by the rules" and announced that his administration will rejoin the World Health Organisation (WHO). Biden was responding to a question on Thursday about his remarks during the presidential debates that he wanted to punish China over the way it has been behaving. "It's not so much about punishing China, it's about making sure China understands they've got to play by the rules. It's a simple proposition," Biden said. Watch this video for more.