BREAKING: French AI start-up Mistral has raised $830mn in debt financing to support the construction of Nvidia-powered data centres across Europe. CEO @arthurmensch says: "Scaling our infrastructure in Europe is critical to empower our customers and to ensure AI innovation and autonomy remain at the heart of Europe". The investment comes as the company undergoes rapid growth from companies and governments seeking “sovereign” European alternatives to US groups such as Microsoft, Amazon and…