Daniel was born in Budapest, Hungary, to the grandchildren of Holocaust survivors, and grew up in New York City. Daniel obtained his Bachelor's degree from Penn State University, has a Juris Doctorate with a specialization in public international law, and is affiliated with Chabad and Shurat Hadin. He is the author of several books and articles, including The PeaceMatrix™. Daniel's approaches to the challenges of anti-Semitism, terrorism, and Israeli and international peace and security combine understandings of psychology, philosophy, law, Judaism and spirituality, and metaphysics.