| UPDATED: 10:31, Wed, Dec 30, 2020 Link copied Joe Biden discusses North Korea threat during debate Sign up to receive our rundown of the day's top stories direct to your inbox SUBSCRIBE Invalid email When you subscribe we will use the information you provide to send you these newsletters. Sometimes they'll include recommendations for other related newsletters or services we offer. Our Privacy Notice explains more about how we use your data, and your rights. You can unsubscribe at any time. The senior political figure has become more prominent in recent years having appeared at high-profile talks between her brother and US President Donald Trump. She has also issued sharp rhetoric to South Korea, with which the North has high tensions.