This paper explores the security implications of climate change with a special focus on the Asia-Pacific region. The core message is that climate change’s adverse impacts could act a “threat multiplier” and exacerbate existing political, economic and social tensions. In fragile regions, this could result in destabilization and conflict and pose a threat to national and international security. If countries fail to address this threat, climate change may trigger conflict within nations and between them. This conflict could come about as a result of a natural disaster, resource scarcity, mass migration and others. However, climate change also has the potential to unite the international community, as long as states recognize climate change as a threat and cooperate to achieve a policy that is both coordinated and inclusive.