 Complete the following phrase:  A sympathizer and secret member of the fascist Iron Guard movement, he was also the royal commissioner involved in the 1934 acquittal of Guard leader Corneliu Zelea Codreanu. Petrovicescu was assigned his ministerial position by Codreanus successor Horia Sima, serving as one of the main Iron Guardists in the conflicted cabinet headed by Ion Antonescu. In this capacity, he helped Sima obtain control of an armed structure, and, taking the partys side during the 