In 2003 two students from the Netherlands, David Vermijs and Tjeerd Tim, organized the first ever Dutch delegation to participate in the Harvard National Model United Nations (HNMUN) at Harvard University in America.
In the same year two new United Netherlands activities were launched: the Month of the UN, a month-long preparatory course for RiMUN, and a pilot version of the United Netherlands High School Program (HSP), a programme specifically designed for high school students.