This book, edited by Professors Allan R. Brewer-Carías and León Henrique Cottin, contains the reproduction of the COUNTER-MEMORIAL ON VENEZUELA (Vols III and IV (of four), filed before the International Court of Justice, in The Hague, on 8 March 2024 in the Case:GUYANA v. VENEZUELA. Arbitral Award of 3 October 1899, Case 171, and published by the Academia de Ciencias Políticas y Sociales of Venezuela and the Editorial Jurídica Venezolana, Caracas 2026, 688 pp.