of his plans to invade the Soviet Union later that year and asked Romania to participate. By this time, Hitler had come to the conclusion that while Sima was ideologically closer to him, Antonescu was the more competent leader capable of ensuring stability in Romania while being committed to aligning his country with the Axis. The Antonescu-Sima dispute erupted into violence in January 1941, when the Iron Guard instigated a series of attacks on public institutions and a pogrom, incidents collectively known as the "Legionary Rebellion." This came after the mysterious assassination of Major Döring, a German agent in Bucharest, which was used by the Iron Guard as a pretext to accuse the Conducător of having a secret anti-German agenda, and made Antonescu oust the Legionary Interior Minister, Constantin Petrovicescu, while closing down all of the Legionary-controlled "Romanianization" offices. Various other clashes prompted him to demand the resignation of all Police commanders who sympathized with the movement. After two days of widespread violence, during which Guardists killed some 120 Bucharest Jews, Antonescu sent in the Army, under the command of General Constantin Sănătescu. German officials acting on Hitler's orders, including the new Ambassador Manfred Freiherr von Killinger, helped Antonescu eliminate the Iron Guardists, but several of their lower-level colleagues actively aided Sima's subordinates. Goebbels was especially upset by the decision to support Antonescu, believing it to have been advantageous to "the Freemasons." After the purge of the Iron Guard, Hitler kept his options open by granting political asylum to Sima—whom Antonescu's courts sentenced to death—and to other Legionaries in similar situations. The Guardists were detained in special conditions at Buchenwald and Dachau concentration camps. In parallel, Antonescu publicly obtained the cooperation of Codreanists, members of an Iron Guardist wing which had virulently opposed Sima, and whose leader was Codreanu's father Ion Zelea Codreanu. Antonescu again sought backing from the PNȚ and PNL to form a national cabinet, but his rejection of parliamentarism made the two groups refuse him. Antonescu traveled to Germany and met Hitler on eight more occasions between June 1941 and August 1944. Such close contacts helped cement an enduring relationship between the two dictators, and Hitler reportedly came to see Antonescu as the only trustworthy person in Romania, and the only foreigner to consult on military matters. The American historian Gerhard Weinberg wrote that Hitler after first meeting Antonescu "...was greatly impressed by him; no other leader