To summarise, the general ethos is one of rebuilding the Empire of Morocco, particularly her territories under the Almoravids and Alaouites. This emerged in the 50s and 60s with Morocco's independence, and was fuelled both by the desire to gain all the Spanish bits such as Ifni, Cueta, Meilla and the Spanish Sahara that weren't given to the new government at indepence in 1956, and also by the presence in the early period of Mauritanian independence of a political faction advocating for union with Morocco which was defeated by the group advocating an independent state of Mauritania.
So yeah, it's pretty flimsy.