A Dutch national, Lex Takkenberg is the senior advisor on the Question of Palestine at the Arab Renaissance for Democracy and Development (ARDD), a coalition that aims to "tackle and influence policies and agendas on issues of localization, justice, humanitarianism and development." He is also a nonresident professor of humanitarian affairs at Fordham University. From 1989 until 2019, he worked in various field and headquarters positions with UNRWA, the UN agency for Palestinian refugees, most recently at its Amman base as the agency's first chief ethics officer. He has a law degree from the University of Amsterdam and a doctorate in international law from the University of Nijmegen, the Netherlands. A new version of his book, "The Status of Palestinian Refugees in International Law" (co-written with Francesca Albanese), was published in 2020.