Alexander Hypomnemata

When Alexander  died in 323, his Notebooks (Hypomnemata) included grandiose plans for the conquest of North Africa and the circumnavigation of the Arabian peninsula, though in truth there was much left to be done in areas that had formerly been subject to, or else a thorn in the side of, the Persian kings.

Does anyone know more as about this ?

When Alexander leaves for some kind of expedition, he always leaves someone behind trustworthy to watch over the terrorities he had conquered. I can imagine that Sycthia and India and Sogdia would be the trouble spots in the Empire because they are yet untammed, only touched by Alexander. In India, the cities he had conquered in the Indus Valley basically revolted as soon as Alexander left and regained independence under Alexander. But as usual, if someone starts a revolt, Alexander would execute the ringleaders of the uprising and regain control over it.

I think the conquering the Arabian Peninsula at the time was nothing really big, and no need to worry but going into Carthage... without settling the affairs in Persia, then there would be some trouble in Alexander's empire. The Macedonian government at the time needed to expand its terrorities or else it will face internal destruction which is the need that helped Macedon and Greece became so powerful.

There were still some Persian satraps that wasnt conquered in the Arabia peninsula and I guess Alexander want to conquer them because they never really recognized Alexander as the king of Persia.