Conversation so far:
What was Johan Galtung criticized for regarding the Cold War?
Galtung's statements have drawn criticism for criticism of Western countries during the Cold War and perceived as a positive attitude to the Soviet Union, Cuba and Communist China.
How did Johan Galtung respond to the criticism anti-Semitism?
Galtung himself has vehemently repudiated accusations of antisemitism as smearing and libel in a published statement.
How long did the criticism of Johan Galtung regarding the Cold War continue?
During the course of his career, Galtung statements and views have drawn criticism.

Question: What else did he do to handle the criticism?
Self-contained rewrite: What else did Johan Galtung do to handle the criticism of anti-Semitism?