The Vietnam War profoundly impacted both North and South Korea, shaping their political, economic, and security landscapes. South Korea's heavy involvement, including the deployment of nearly 50,000 troops and receiving substantial U.S. financial and military support, bolstered its economy and ensured American commitment to its defense. In contrast, North Korea's role was limited but coincided with heightened provocations on the Korean Peninsula, leading to significant security tensions. The war underscored the geopolitical stakes for both Koreas, influencing their strategies and relations with the US and each other for decades.