In the prelude to the NATO summit in London commemorating the 70th anniversary of the founding of the alliance, discussions were overshadowed by a now-infamous Economist interview with French President Emmanuel Macron. In the interview, the French President claimed that NATO is experiencing a “brain death” – a ‘mort cérébrale’ resulting from a lack of institutional capacity to prevent, mitigate, or effectively respond to unilateral action from individual allies which could be disruptive to the alliance’s agenda. President Macron’s remarks precipitated a debate concerning NATO’s relevance (or irrelevance) in the post-Cold War international system, its (potentially failing) adaptation to new security and strategic circumstances, and the constraints imposed by NATO’s seeming lack of institutionalisation and ability to prevent unilateral action …

US president Donald Trump recently announced the establishing of a “Space Force,” a new branch of the military to project US military might into outer space. In doing so, he followed up on his March 2018 statement that his administration “recognizes that space is a war-fighting domain, just like the land, air and sea.” While such ideas are neither wholly new nor exclusively held by president Trump, they seem to challenge the fundamental principle of outer space as a global commons, which was enshrined in the 1967 Outer Space Treaty. Questions of outer space security are not just important for their own sake, as this article will show, they have wide-reaching implications for global security. Global security and space security …