Nikolić communicated his intention to write a doctoral dissertation on French-Croatian relations at the Sorbonne in Paris. He was granted a temporary one-year residence in France, but the French Ministry of Internal Affairs, through the Paris Prefecture, made a decision on 18 October 1966 to expel Nikolić from France. Nikolić left Paris and France on 27 October of 1966. He warned that the Yugoslav government, through its embassy in Paris, urged France to cancel his residence in France. It accused him before the French authorities of revolutionary activities against Yugoslavia. Contrary to these accusations, Nikolić stressed in his defence that his review is a democratic and universal Croatian periodical that gathers Croatian intellectuals in the free world. On this occasion, Nikolić said that he advocated for exercise of self-determination to the Croatian case as well and that Yugoslavia would also need to agree to hold free elections. In conclusion, he said he supported a peaceful solution to the political crisis with Yugoslav communists and with other people in Yugoslavia. His defence before the French authorities did not bear fruit, and after that he travelled throughout Europe for the next two years, until 1968, when he arrived in Spain.