Employees working in Google DeepMind's UK offices have voted to unionize over concerns about the company's defense work with Israel and the Pentagon. If successful, DeepMind — which is central to Google's efforts to develop artificial intelligence — would be the first frontier AI lab to unionize. In a letter sent to management on Tuesday and seen by Business Insider, employees in the DeepMind unit requested recognition of the Communication Workers Union and Unite the Union. The vote to unionize