Workers at Google's UK-based DeepMind have voted to unionize, driven by concerns over a recent deal between Google and the US Department of Defense regarding artificial intelligence technologies. The team sent a letter to management requesting recognition of the Communication Workers Union and Unite the Union as their representatives. They expressed worries about the Pentagon's intentions, citing its involvement in conflicts and the potential use of AI technologies for military purposes. The Pentagon's agreements allow the use of AI for 'any lawful use,' but do not grant Google or its partners control over how these technologies are used. The DeepMind workers are advocating for commitments from Google to avoid developing technology that could harm individuals, and they are calling for the establishment of an independent ethics oversight body. Additionally, they want the right to opt out of projects that conflict with their moral beliefs.