Rotterdam has a new slogan: "Make it happen." This must be the city Rotterdam put on the international map. The new slogan was unveiled on Monday 15 December 2014 by Mayor Ahmed Aboutaleb, Port Authority's director Allard Castelein, Erasmus University's Pauline van der Meer Mohr and Ros Voskuilen's director Rotterdam Partners, the organization that promotes the port city's economy. It is the first time that the municipality, the university and the port company will jointly use the same slogan. The official cooperation has been confirmed by the parties involved by placing the signatures on our graffiti wall.