Original sentence: Arguing that Chile was under siege by communist subversives, Pinochet implemented a series of security operations in which (according to the Rettig Report) around 3,000 suspected terrorists or known extremist dissidents were killed, and (according to the Valech Report) around 30,000 more were tortured
Edited sentence: Arguable based in the fact that Chile was under siege by communist subversives, Pinochet implemented a series of security operations in which (according to the Rettig Report) around 3,000 suspected terrorists or known extremist dissidents were killed, and (according to the Valech Report) around 10,000 more were tortured