under the aegis of somebody/something
From Longman Dictionary of Contemporary Englishunder the aegis of somebody/somethingunder the aegis of somebody/something formalPROTECTwith the protection or support of a person or organization a refugee camp operating under the aegis of the UN → aegisExamples from the Corpusunder the aegis of somebody/something• The refugee camp operates under the aegis of the UN.• More often than not, racial themes enter the conversation of the YCs under the aegis of fun.