Hitler met other than Mussolini ever received such consistently favourable comments from the German dictator. Hitler even mustered the patience to listen to Antonescu's lengthy disquisitions on the glorious history of Romania and the perfidy of the Hungarians—a curious reversal for a man who was more accustomed to regaling visitors with tirades of his own." In later statements, Hitler offered praise to Antonescu's "breadth of vision" and "real personality." A remarkable aspect of the Hitler-Antonescu friendship was neither could speak others' language. Hitler only knew German while the only foreign language Antonescu knew was French, in which he was completely fluent. During their meetings, Antonescu spoke in French which was then translated into German by Hitler's translator Paul Schmidt and vice versa since Schmidt did not speak Romanian either. The German military presence increased significantly in early 1941, when, using Romania as a base, Hitler invaded the rebellious Kingdom of Yugoslavia and the Kingdom of Greece (see Balkans Campaign). In parallel, Romania's relationship with the United Kingdom, at the time the only major adversary of Nazi Germany, erupted into conflict: on 10 February 1941, British Premier Winston Churchill recalled His Majesty's Ambassador Reginald Hoare, and approved the blockade of Romanian ships in British-controlled ports. On 12 June 1941, during another summit with Hitler, Antonescu first learned of the "special" nature of Operation Barbarossa, namely, that the war against the Soviet Union was to be an ideological war to "annihilate" the forces of "Judeo-Bolshevism," a "war of extermination" to be fought without any mercy; Hitler even showed Antonescu a copy of the "Guidelines for the Conduct of the Troops in Russia" he had issued to his forces about the "special treatment" to be handed out to Soviet Jews. Antonescu completely accepted Hitler's ideas about Operation Barbarossa as a "race war" between the Aryans, represented by the Nordic Germans and Latin Romanians on the Axis side vs. the Slavs and Asians, commanded by the Jews on the Soviet side. Besides anti-Semitism, there was an extremely strong current of anti-Slavic and anti-Asian racism to Antonescu's remarks about the "Asiatic hordes" of the Red Army. The Asians Antonescu referred were the various Asian peoples of the Soviet Union, such as the Kazakhs, Kalmyks, Mongols, Uzbeks, Buryats, etc. During his summit with Hitler in June 1941, Antonescu told the Führer that he believed it was necessary to "once and for all" eliminate Russia as a