Complex sentence: Shishakli eventually abolished multipartyism altogether, but was himself overthrown in a 1954 coup and the parliamentary system was restored, but by this time, power was increasingly concentrated in the military and security establishment.
Split into simpler sentences: Shishakli eventually abolished multipartyism altogether, but was himself overthrown in a 1954 coup and the parliamentary system was restored. However, by this time, power was increasingly concentrated in the military and security establishment.