Mohammed leads first joint au un high level mission to africa

I think there may be some confusion here. Mohammed is a common name, and there are many individuals with that name who have led various missions and initiatives. However, I'm assuming you're referring to a specific person, such as Mohammed bin Zayed Al Nahyan, the Crown Prince of Abu Dhabi and Deputy Supreme Commander of the United Arab Emirates Armed Forces.

If that's the case, I'd be happy to help you with your question. Could you please provide more context or clarify what you mean by "first joint AU UN high-level mission to Africa"? Are you referring to a specific event, initiative, or mission that took place in Africa, and if so, what was its purpose and outcome?

Additionally, if you could provide more information about the mission, such as the date, location, and any notable outcomes or achievements, I'd be happy to help you research and provide more information.