This document summarizes a presentation by Kaspar Nielsen on strategic cluster internationalization. It discusses Cluster Excellence Denmark, which supports 45+ Danish clusters and networks. The presentation outlines the objectives of the Enterprise Europe Network Thematic Group for Clusters in facilitating international cluster collaboration. It then describes the research method used to study cluster internationalization, including surveys and interviews. The key aspects of an international strategy are defined, such as mission, targets, boundaries and key performance indicators. Finally, the 5 phases of strategic cluster internationalization are presented.