President Joe Biden agreed Wednesday with his South Korean counterpart Yoon Suk Yeol on plans for Washington to send nuclear submarines to its major ally for the first time in four decades as part of efforts to bolster extended deterrence measures in response to North Korea's growing nuclear threat. In addition to bilateral issues, the summit's joint statement said Biden and Yoon reiterated the importance of maintaining peace across the Taiwan Strait, boosting cooperation with Southeast Asian and other countries in the region, and supporting Ukraine in its defense against Russia's aggression. Yoon's state visit, the first to the United States by a South Korean leader since 2011, comes as he seeks to forge closer ties with the United States and Japan to advance economic security among other goals