TODAY 8a: NBC News exclusive — US diplomats on Havana Syndrome. Best Buy CEO on supply chain shortages. Reba McEntire on upcoming tour.

<p>NBC News exclusive — U.S. diplomats speak to NBC’s chief Washington correspondent, Andrea Mitchell, on Havana Syndrome. Plus, Savannah Guthrie and Hoda Kotb speak with Best Buy’s CEO Corie Barry on the supply chain shortages and what the future holds for companies and customers. Also ahead, Reba McEntire chats with Savannah and Carson Daly as she gets ready for her upcoming tour and shares a new take on one of her classic hits.</p>