 Hulsman lectured on cultural diversity, media, Arab-West relations, Muslim-Christian relations in the Netherlands, Belgium, Germany, Austria, Denmark, Czech Republic, Spain, U.S., Jordan and Egypt.During his studies Hulsman was deeply influenced by former Dutch Consul-General to Saudi Arabia, Daniel van der Meulen (1894–1989) who stimulated Hulsman's interest in the Arab world and Muslim-Christian relations., Syrian Orthodox Bishop Samuel Aktash of the Tur Abdin in Turkey who showed him in the mid eighties the damage caused by oriental Christians leaving their homelands, a theme repeated by HRH Prince Hassan bin-Talal in an interview with Hulsman for Christianity Today.Dr.