Flags will be flown at half-mast after President Emmanuel Macron declared a national day of mourning. Flags will be flown at half-mast after President Emmanuel Macron declared a national day of mourning. Post navigation Donald Trump Appoints Indian-American, Elon Musk Aide As AI Advisor Health Matters | ‘Too Good To Be True’: Russia Claims Cancer Vaccine Discovery, Oncologists Sceptical