S.Korea's Yoon to meet Biden as doubts grow over nuclear umbrella

FILE PHOTO: South Korean President Yoon Suk Yeol attends an interview with Reuters at the Presidential Office in Seoul, South Korea, April 18, 2023. REUTERS/Kim Hong-Ji/File Photo/File Photo

SEOUL (Reuters) -South Korean President Yoon Suk Yeol set off on Monday for the United States and a summit with President Joe Biden at a time of rare questioning in South Korea of an alliance that has guaranteed its security for decades.

Yoon's April 24-29 trip is the first state visit to the U.S. by a South Korean leader in 12 years and will mark the 70th anniversary of a partnership that has helped anchor U.S. strategy in Asia and provided a foundation for South Korea's emergence as an economic powerhouse.