As Secretary of State Clinton and Asia-Pacific ministers gathered in Phnom Penh for a series of security meetings last week, the telling reality of regional security occurred elsewhere. A week earlier, the controversy that led South Korean (ROK) NSC Advisor Kim Tae-hyo to resign and the recent South Korean government decision to postpone the signing of its first military cooperation agreement with Japan speaks volumes about the power of historical memory shaping perceptions and limiting security cooperation in the region.