Through regained Comintern control, the interior wing began organizing itself as a more efficient conspiratorial network. The onset of the Great Depression in Romania, and the series of strikes infiltrated (and sometimes provoked) by the interior wing signified relative successes ("see Lupeni Strike of 1929"), but gains were not capitalized—as lack of ideological appeal and suspicion of Stalinist directives remained notable factors. In parallel, its leadership suffered changes that were meant to place it under an ethnic Romanian and working class leadership—the emergence of a Stalin-backed group around Gheorghe Gheorghiu-Dej before and after the large-scale Grivița Strikes.