This breakthrough could usher in a wave of cancer vaccines

President Trump is pushing for a meeting with North Korean leader Kim Jong Un as talks for a nuclear deal with Iran stalls. The Wall Street Journal’s Alex Ward explains why North Korea now negotiates from a position of strength. A personalized mRNA cancer vaccine delayed the return of melanoma in a major clinical trial. Stat News’s Angus Chen breaks down how it trains the immune system to hunt cancer cells. The NFL has long dreamed of going global. The Athletic’s Jayna Bardahl tells us about the scheduling and player buy-in hurdles standing in the way. Plus, a Navy carrier relieved the USS Abraham Lincoln in the Middle East, a progressive Democrat won a House special election in California, and an Army battalion is offering reenlisting troops a four-day pass to play ‘Grand Theft Auto VI’ as an incentive. Today’s episode was hosted by Cecilia Lei.