Alfred Verdross
![Verdross in 1927](https://upload.wikimedia.org/wikipedia/commons/4/48/Alfred_Verdross_1927.jpg)
After having served as an Austrian foreign ministry official, he became professor of public international law, private international law and philosophy of law at the University of Vienna. He was a pan-German nationalist and an early sympathizer with Nazism, but did not join the Nazi party. Following the German occupation of Austria, he was suspended from his teaching assignments, but from mid-1939 onwards he was allowed to resume the teaching of international law. After the end of World War II he continued his academic career in Vienna and became, among other things, member of the International Law Commission, member of the Permanent Court of Arbitration, president of the Institut de Droit International and, from 1959 to 1977, judge at the European Court of Human Rights.
Together with Hans Kelsen, and Josef L. Kunz, he was one the main exponents of the Vienna school of legal theory. He was an early proponent and chief theorist of the ''ius cogens'' doctrine and of the monist theory of the relationship between international and national law, and is considered one of the most influential international lawyers of the 20th century. Provided by Wikipedia