{"id":469357,"date":"2026-03-11T09:25:11","date_gmt":"2026-03-11T09:25:11","guid":{"rendered":"https:\/\/www.newsbeep.com\/uk\/469357\/"},"modified":"2026-03-11T09:25:11","modified_gmt":"2026-03-11T09:25:11","slug":"microsoft-backs-anthropic-in-legal-fight-with-the-pentagon","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/uk\/469357\/","title":{"rendered":"Microsoft backs Anthropic in legal fight with the Pentagon"},"content":{"rendered":"<p>Unlock the White House Watch newsletter for free<\/p>\n<p class=\"article__content-sign-up-topic-description o3-type-body-base\">Your guide to what Trump\u2019s second term means for Washington, business and the world<\/p>\n<p>Microsoft has backed Anthropic\u2019s lawsuit against the Pentagon, warning that the \u201cdrastic\u201d and \u201cunprecedented\u201d moves against the AI start-up would have \u201cbroad negative ramifications\u201d for the US tech industry.<\/p>\n<p>The software giant in a <a href=\"https:\/\/storage.courtlistener.com\/recap\/gov.uscourts.cand.465515\/gov.uscourts.cand.465515.34.1.pdf\" title=\"\" data-trackable=\"link\" rel=\"nofollow noopener\" target=\"_blank\">filing<\/a> on Tuesday called for a temporary restraining order blocking enforcement of the defence department\u2019s decision to brand Anthropic a supply chain risk while the court considers the start-up\u2019s legal challenge.<\/p>\n<p><a href=\"https:\/\/www.ft.com\/stream\/4f447b5d-53f5-41bd-ab42-3c0cfc161699\" title=\"\" data-trackable=\"link\" rel=\"nofollow noopener\" target=\"_blank\">Microsoft<\/a> is the first Big Tech company to take sides in Anthropic\u2019s feud with the Pentagon over the terms governing military use of its AI models.<\/p>\n<p>The clash has split Silicon Valley, which has until recently carefully avoided openly challenging the Trump administration since the president\u2019s return to office. <\/p>\n<p>The software giant argued a restraining order would allow time for a negotiated settlement and \u201creasoned discussion\u201d about the use of AI in military and intelligence operations.<\/p>\n<p>Negotiations between <a href=\"https:\/\/www.ft.com\/stream\/15c0cb45-8892-46cd-a086-1d2716ae7246\" title=\"\" data-trackable=\"link\" rel=\"nofollow noopener\" target=\"_blank\">Anthropic<\/a> and the Pentagon collapsed late last month after the $380bn start-up rejected a contract for military deployment of its technology. Chief executive Dario Amodei insisted on \u201cred lines\u201d prohibiting its use for lethal autonomous weapons and mass surveillance of US citizens.<\/p>\n<p>Defence secretary Pete Hegseth has since moved to cut Anthropic from the Pentagon supply chain, a measure normally reserved for companies from China or Russia. <\/p>\n<p>The administration has also demanded that all federal agencies stop using its Claude chatbot as part of a campaign against what it calls \u201cwoke\u201d AI.<\/p>\n<p>Microsoft said its \u201cposition is that AI should be focused on lawful and appropriately guarded use cases\u201d.<\/p>\n<p>AI, it said, \u201cshould not be used to conduct domestic mass surveillance or put the country in a position where autonomous machines could independently start a war\u201d.<\/p>\n<p>The Seattle-based company, which has large military contracts, added that rapidly cutting off Anthropic could \u201champer US warfighters at a critical point in time\u201d.<\/p>\n<p>Claude is currently the only AI tool used in classified military settings, although OpenAI recently signed a deal with the Pentagon.<\/p>\n<p>Microsoft is not a defendant in the case and submitted the amicus brief to courts in California and the District of Columbia. <\/p>\n<p>On Monday, a group of more than 30 researchers at Google and OpenAI, including DeepMind\u2019s chief scientist Jeff Dean, threw their personal support behind Anthropic in a similar letter.<\/p>\n<p>The White House and the Pentagon did not immediately respond to requests for comment.<\/p>\n<p>Despite owning 27 per cent of arch-rival OpenAI, Microsoft has fostered close ties with the Claude chatbot maker and signed a <a href=\"https:\/\/www.ft.com\/content\/2f82a42c-7b41-40a4-b549-bce7805166f3\" title=\"\" data-trackable=\"link\" rel=\"nofollow noopener\" target=\"_blank\">$30bn cloud computing deal<\/a> with it in November. <\/p>\n<p class=\"n-content-recommended__title o3-type-body-highlight\">Recommended<\/p>\n<p><a href=\"https:\/\/www.ft.com\/content\/c496ae6d-a28b-42fb-ba7e-ba27632f947f\" data-trackable=\"image-link\" data-trackable-context-story-link=\"image-link\" tabindex=\"-1\" aria-hidden=\"true\" rel=\"nofollow noopener\" target=\"_blank\"><img decoding=\"async\" class=\"o-teaser__image\" src=\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2026\/03\/https:\/\/images.ft.com\/v3\/image\/raw\/https%3A%2F%2Fd1e00ek4ebabms.cloudfront.net%2Fproduction%2Fdc02c8.jpeg\" alt=\"Dario Amodei gestures while speaking during a session at the World Economic Forum, with attendees visible in the background.\"\/><\/a><\/p>\n<p>This week it said it is <a href=\"https:\/\/www.ft.com\/content\/0978b9ad-d345-4aad-bed2-37c22fbf3214\" title=\"\" data-trackable=\"link\" rel=\"nofollow noopener\" target=\"_blank\">integrating<\/a> Anthropic\u2019s popular coding models into its business software, which is used across the US government.<\/p>\n<p>Google, Amazon and Microsoft have previously said their lawyers had determined they could continue to use Anthropic for non-military work.<\/p>\n<p>Microsoft said the supply chain risk designation \u201cforces government contractors to comply with vague and ill-defined directions that have never before been publicly wielded against a US company\u201d.<\/p>\n<p>\u201cThis is not the time to put at risk the very AI ecosystem that the administration has helped to champion,\u201d it added.<\/p>\n","protected":false},"excerpt":{"rendered":"Unlock the White House Watch newsletter for free Your guide to what Trump\u2019s second term means for Washington,&hellip;\n","protected":false},"author":2,"featured_media":469358,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[554,733,4308,86,56,54,55],"class_list":{"0":"post-469357","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-artificial-intelligence","8":"tag-ai","9":"tag-artificial-intelligence","10":"tag-artificialintelligence","11":"tag-technology","12":"tag-uk","13":"tag-united-kingdom","14":"tag-unitedkingdom"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/469357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/comments?post=469357"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/469357\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media\/469358"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media?parent=469357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/categories?post=469357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/tags?post=469357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}