Complex sentence: After the fall of communism, he was a co-founder of the Anthroposophical Society in Russia, and at Easter 2001 he became a member of the Executive Council of the General Anthroposophical Society in Dornach, Switzerland.
Split into simpler sentences: After the fall of communism, he was a co-founder of the Anthroposophical Society in Russia. At Easter 2001, he became a member of the Executive Council of the General Anthroposophical Society in Dornach, Switzerland.