Among the 18 men provisionally charged in Spain in last month's devastating train bombings in Madrid are 14 Moroccans, some of whom are thought to have links with last year's multiple train bombings in Casablanca.
Jose Luis Rodriguez Zapatero will unveil a monument to the victims of those attacks during his visit to the Moroccan capital, Rabat.
And while he lunches with King Mohammed VI and his prime minister, Spain's foreign and interior ministers will meet their Moroccan counterparts.
Duggar sisters unveil Christian dating rules in new book
Astronomers offer more expansive view of universe