What is the fine-grained topic of the following text: Under the auspices of the Kantor Center, the Ze'ev Vered Desk for the Study of Tolerance and Intolerance in the Middle East, the Never Again Association, and the T. Manteuffel Institute of History of the Polish Academy of Sciences, a international gathering took place in Warsaw between October 15th. Only return the topic.
An international gathering on tolerance and intolerance in the Middle East organized by various institutes and associations.