South Korea and Mexico reached agreement on revising their investment protection treaty after seven years of negotiations, while President Lee Jae-myung and Mexican President Claudia Sheinbaum advanced broader economic cooperation. The revised agreement preserves Mexico's legitimate regulatory authority while strengthening protections for Korean investors, including recovery of invested funds, compensation for losses, improved dispute settlement, safeguards against paper-company claims, fund transfers during foreign-exchange crises and remedies for excessive tax measures. The countries signed 16 memorandums of understanding covering seven areas—economy, finance, education, culture, tourism, development and customs—and adopted a joint declaration on artificial intelligence cooperation. The Export-Import Bank of Korea also signed a memorandum of understanding with Mexico's Banco Nacional de Comercio Exterior, or BANCOMEXT, for $100 million, approximately 135.8 billion won, in indirect-financing support. The arrangement will channel funds through Mexican banks to companies buying Korean goods and services, with priority sectors including automobiles, biomedical industries, mineral resources, energy and aerospace. The cooperation is the Korean bank's return to indirect financing in Mexico after eight years and is intended to support Korean companies amid North American trade and supply-chain changes. The broader agenda includes energy and crude-supply cooperation, digital industries, aerospace and defense, cultural exchanges, law-enforcement coordination, agricultural technology and anti-corruption efforts. The countries also agreed to expand AI cooperation in line with the APEC AI Initiative adopted at last year's Asia-Pacific Economic Cooperation Summit in Gyeongju.