In Defence of Marxism is the English-language theoretical quarterly of the Revolutionary Communist International. The magazine is laid-out, edited, and published at the UK International offices with full-color interior.

In issue 9:

• The Organic Crisis of Capitalism & the Age of "Secular Stagnation"
• The Crisis in Cosmology: A Marxist Analysis
• Unpublished Letter from Trotsky
• Wilfred Own and the Muse of War

24 pages.