Alexander was selected as a Yale World Fellow and taught and studied the last semester of 2014 at Yale University. He has been working as a diplomat for the Netherlands Ministry of Foreign Affairs since 1992. Prior to his current position Alexander was Policy coordinator for the Gulf Region. He had postings in Vienna (OSCE), Bonn, and London. At MFA headquarters in The Hague, he also worked for six years in the security department and for several years in the Asia department. Alexander has a MSc in Human Geography from Utrecht University, worked as a journalist and was an officer in the Royal Netherlands Navy before joining the MFA.