“DeepMind’s chief scientist Jeff Dean has been the most vocal executive on the issue so far. In February, he posted on X that “Mass surveillance violates the Fourth Amendment and has a chilling effect on freedom of expression.” He added that he still backed a 2018 commitment to ban lethal autonomous weapons.
Google has faced previous protests against its military ties. In 2018, several staff quit and thousands signed a petition against Project Maven, which used AI to improve drone strikes. Google did not renew the contract and pledged not to work on AI for weapons or surveillance.
However, last year it quietly dropped that stance in an update of its AI Principles, deleting language that promised not to pursue “weapons or other technologies whose principal purpose or implementation is to cause or directly facilitate injury to people”.
Co-founder Demis Hassabis explained the decision by saying that the world has changed since Google acquired DeepMind in 2014. Multiple frontier models are now widely available and US tech companies have a duty to help the country defend itself.”

Source : Google staff urge chief executive to block US military AI use