Check out this link:
Insurgency in Ethnically Divided Authoritarian-led Societies: A Comparative Study of Rebel Movements in Ethiopia, 1974-2014
https://tspace.library.utoronto.ca/bitstream/1807/92088/3/Teshale_Semir_Y_201811_PhD_thesis.pdf
Page 224
Shut out of any possibility of extricating themselves from the Somali government’s iron fist, the SALF and the WSLF—once the most visible forces in eastern Ethiopia—were rendered obscure by the mid-1980s. Their demise—partly caused by excessive dependence on a power that radically changed its anti-Mengistu rhetoric and behavior after its defeat in a war with the military regime—illustrates the important lesson that autonomy is a crucial factor for the survival of a rebel group and the durability of its insurgency.
Insurgency in Ethnically Divided Authoritarian-led Societies: A Comparative Study of Rebel Movements in Ethiopia, 1974-2014
https://tspace.library.utoronto.ca/bitstream/1807/92088/3/Teshale_Semir_Y_201811_PhD_thesis.pdf
Page 224
Shut out of any possibility of extricating themselves from the Somali government’s iron fist, the SALF and the WSLF—once the most visible forces in eastern Ethiopia—were rendered obscure by the mid-1980s. Their demise—partly caused by excessive dependence on a power that radically changed its anti-Mengistu rhetoric and behavior after its defeat in a war with the military regime—illustrates the important lesson that autonomy is a crucial factor for the survival of a rebel group and the durability of its insurgency.