Aryeh Neier, who has led George Soros’s network of philanthropies for 18 years, said he will retire as president of the Open Society Foundations in April next year when he turns 75.

Neier was instrumental in turning Soros’s charitable organizations into formidable instruments for anti-Americanism and nihilistic destruction worldwide. “It will undoubtedly be a new era,” the Chronicle of Philanthropy quotes Soros saying. “We have had a very productive relationship: two different characters, two different types of people, each respecting the other and having a creative tension between us. This will be disrupted by his departure.”

A successor has not yet been anointed.