"a wall of forest is being planned to stop the desertification of southern Africa". Very interesting, no kidding. Who is planning that? The last successful country in such endeavour is Kazakhstan. And to certain extent - China. Making 'wall of forest' is a programme with planning horizon of more than 50 years. I'd like to know the name of stakeholders.

So apparently Africa has a union not unlike the early EU [1] and they are in charge of it, as prominently mentioned in the wikipedia article above.

[1] https://en.wikipedia.org/wiki/African_Union

Thank you. Forest plantations in arid zones are tricky thing. I know that, because I studied that topic for about a year. Expensive too. I wish them 100 years of piece and prosperity to complete that, and will gladly assist, if invited.