U.S. President Donald Trump and South Korea's new president Lee Jae-myung agreed to work toward a swift tariff deal and shared stories about their experiences in their first phone call since Lee was elected,

Left-leaning challenger Lee Jae-myung won South Korea’s presidential election, ending three years of conservative rule in a race that was largely a verdict on his ousted predecessor’s botched attempt to revive martial law in the longstanding US ally.