 The treaty resolved questions about foreign oil interests in Mexico, largely in favor of U.S. interests, but Obregón's government gained U.S. diplomatic recognition.With that arms and ammunition began flowing to revolutionary armies loyal to Obregón.Since Obregón had named his fellow Sonoran general, Plutarco Elías Calles, as his successor, Obregón was imposing a "little known nationally and unpopular with many generals," thereby foreclosing the ambitions of fellow revolutionaries, particularly his old comrade Adolfo de la Huerta.