The leaders of South Korea and Canada on Wednesday vowed to strengthen their security and economic cooperation to address challenges posed by North Korea and expand Canadian supplies of minerals crucial to South Korea's technology industry as they held a summit in Seoul. The meeting between South Korean President Yoon Suk Yeol and Canadian Prime Minister Justin Trudeau came before they travel to Japan for the weekend's Group of Seven meetings, where geopolitical uncertainties worsened by Russia's war on Ukraine, China's regional assertiveness and North Korea's nuclear ambitions are expected to drive discussions. In a joint statement issued after the...