Global geopolitics is in a state of intense flux. China’s rise has led to greater competition in the international system, with the United States and the post-War global order coming under increasing challenge. China’s high economic growth rate in the past several decades has meant bigger military budgets. In turn, its military rise threatens security in the Indo-Pacific region where China seeks to dominate, from the Himalayas to South China Sea and East China Sea. Yet, the China challenge is multifaceted and covers the nexus between the domain of tech and the military. Has China’s massive military power, accompanied by its threat or use of force and aggressive actions against its neighbours, heightened insecurity across the Indo-Pacific? Has this in turn intensified the US-China tech war? What is the logic of this tech war and how (if) do the US export control measures restrict the technology flow to China?