By Francesco Guarascio and Phuong Nguyen HANOI (Reuters) -New South Korean President Lee Jae Myung will host Vietnam's top leader To Lam on a visit next week, two people familiar with the plan said, as they aim to boost cooperation on technology at a time of global trade tension that could affect their ties.

South Korea and Vietnam pledge stronger trade cooperation to counter U.S. tariffs, aiming to boost economic ties and regional growth.

In a speech at South Korea's Yonsei University, Lam urged South Korean companies to keep investing in Vietnam and warned of the risk of fragmenting supply chains. "Vietnam welcomes South Korean enterprises to expand their investments in the country, emphasising substantive cooperation in technology," Lam said.