U.S. special envoy Steve Witkoff met with Russian President Vladimir Putin Wednesday, working to hammer out a deal to end the war in Ukraine ahead of President Donald Trump’s Friday deadline. Keir Simmons, NBC News chief international correspondent, joins host Yasmin Vossoughian to explain why they’re unlikely to reach a deal by then. And U.S. Health and Human Services Secretary Robert F. Kennedy Jr. is cutting $500 million in mRNA vaccine contracts. Dr. Paul Offit, director of the Vaccine Education Center at Children's Hospital of Philadelphia joins to break down what that’ll mean for medical research and health policy.