Complex sentence: Jaffe persuaded Chi to join International Labor Defense and Chi recruited Jaffe into forming the American Friends of the Chinese People, and they both wrote under pseudonyms for China Today, a pro-communist newsletter.
Split into simpler sentences: Jaffe persuaded Chi to join International Labor Defense and Chi recruited Jaffe into forming the American Friends of the Chinese People. They both wrote under pseudonyms for "China Today", a pro-communist newsletter.