Pieter Jacobus Hagen (1942) is a Dutch journalist and non-fiction author, who started his career as a reporter for the national newspaper Trouw in 1967.
[1] Later he served as teacher and dean of the School of Journalism in Utrecht (1983–1995), editor-in-chief of De Journalist/Villamedia (1995–2002), and columnist for NRC Handelsblad (2003–2005).
[1] In his books on blood transfusion (1982 and 1993) he criticized the commercialization of human blood and plasma components.
[2] In 2010, he published a biography of Dutch politician Pieter Jelles Troelstra,[3] for which he was awarded the triennial Dr. Joast Halbertsmaprijs in the Dutch province of Friesland in 2012.
[4] His overview of colonial wars in Indonesia (2018) offers a new perspective on the past five centuries: military violence was the backbone of colonialism.