This article focuses on the relationship between cli-mate change and human security in times of armed conflict. After all, the effects of climate change are likely to increase the vulnerability of those caught up in armed conflict. This article thus seeks to clarify the rules of public international law which would appear to be most relevant for the protection of the victims of armed conflict under such circumstances. These rules follow not only from international humanitarian law, which is primarily applicable in times of armed con-flict, but also from international human rights law. Before discussing these rules in more detail, however, this article first considers the relationship between climate change and armed conflict in general and the legal framework relevant to seeking to prevent armed conflict. The article ends with a brief conclusion.