He remained there until his father passed away in 1838 when the Orthodox community of Posen invited him to take over his father’s position as rabbi of the city.

Source: https://www.jewishpress.com/sections/features/features-on-jewish-world/rav-yechezkel-shraga-halberstam-rav-moshe-dovid-valle-rav-shlomo-eiger/2023/01/01/

One of his most famous speeches was the Posen speeches, which he gave to a meeting of SS leaders in the city of Poznan, Poland, in 1943.

Source: https://www.lawfareblog.com/it-was-smart-ai

The reason why, as diagnosed by Posen, is Xi’s plunge into authoritarianism.

Source: https://www.theguardian.com/world/commentisfree/2023/aug/13/putin-and-xi-are-the-laurel-and-hardy-of-statesmen-but-its-no-laughing-matter