APEC

Based on the provided articles, there is no mention of APEC (Asia-Pacific Economic Cooperation). The articles focus on distinct geopolitical issues. One article discusses the ongoing need for apologies between Spain and Mexico, potentially affecting attendance at the Cumbre Iberoamericana in Madrid. The other highlights improved relations between Japan and South Korea, exemplified by a symbolic drum duet between their leaders. This event signifies a potential thaw in diplomatic tensions and increased cultural exchange between the two nations. Therefore, neither article provides information relevant to APEC's activities, recent developments, or current significance. The articles' newsworthiness stems from the ongoing diplomatic complexities between the nations involved.