Former U.S. national security adviser John Bolton warned Tuesday that a renewed summit between President Donald Trump and North Korean leader Kim Jong Un could do more harm than good, arguing that Trump appears more interested in the optics of a meeting than pursuing a carefully prepared strategy.

Speaking at a virtual symposium organized by the Institute for Corean-American Studies (ICAS), Bolton said he was “very skeptical” that Trump could secure meaningful concessions through his oft-touted personal relationshipwith Kim, whose country has significantly advanced its nuclear and ballistic missile capabilities in the seven years since the two leaders last