Exercised full powers of Vice-Prime Minister and Deputy Speaker of Parliament: as Sassine occupied the highest positions allocated to Greek Orthodox in the Lebanese sectarian system he remains one of the few to have exercised the full power of these offices, as they remain symbolic otherwise.
 Other than his role in the 1970 Presidential elections, he acted as Speaker of Parliament on numerous occasions and led parliament on many junctures to pass significant reforms.
Sassine's ability to exercise the Greek Orthodox Deputy responsibilities was due to both strong political backing and personal character.

Saved 24 Lebanese from execution in Guinea: in the early 1970s thirteen Lebanese were sentenced to death in Africa's Guinea in an attempted coup against President Ahmed Sekou Toure.
As the execution order was  to be carried a week after their arrest, and many mediation efforts for their release failed, President Suleiman Frangieh tasked Michel Sassine, then Vice-Prime Minister, on an urgent diplomatic mission to Guinea.
Sassine succeeded in his intervention as Sekou Toure agreed to issue a Presidential pardon and handed all thirteen Lebanese detainees to Sassine to bring back to Lebanon.
Exercised full powers of Vice-Prime Minister and Deputy Speaker of Parliament: as Sassine occupied the highest positions allocated to Greek Orthodox in the Lebanese sectarian system he remains one of the few to have exercised the full power of these offices, as they remain symbolic otherwise.  Other than his role in the 1970 Presidential elections, he acted as Speaker of Parliament on numerous occasions and led parliament on many junctures to pass significant reforms. Sassine's ability to exercise the Greek Orthodox Deputy responsibilities was due to both strong political backing and personal character.
Saved 24 Lebanese from execution in Guinea: in the early 1970s thirteen Lebanese were sentenced to death in Africa's Guinea in an attempted coup against President Ahmed Sekou Toure. As the execution order was  to be carried a week after their arrest, and many mediation efforts for their release failed, President Suleiman Frangieh tasked Michel Sassine, then Vice-Prime Minister, on an urgent diplomatic mission to Guinea. Sassine succeeded in his intervention as Sekou Toure agreed to issue a Presidential pardon and handed all thirteen Lebanese detainees to Sassine to bring back to Lebanon.
Michel Georges Sassine