Rashid al-Din Sinan vs Sinjong of Goryeo

Rashid al-Din Sinan became the leader of the Nizari Ismaili community in Syria, based at the fortress of Masyaf. He consolidated control over a network of fortresses and expanded the sect's influence during the Crusader period.

Rashid al-Din Sinan ordered the assassination of Raymond III of Tripoli, a Crusader count. This act demonstrated the Nizaris' ability to target high-ranking Crusader leaders and influenced the political dynamics of the Crusader states.

Rashid al-Din Sinan met with Saladin, the Ayyubid sultan, after Saladin's failed siege of Masyaf. The meeting resulted in a truce, with Saladin ceasing his campaigns against the Nizaris and allowing them to maintain their fortresses in exchange for non-aggression.

Rashid al-Din Sinan's agents assassinated Conrad of Montferrat, the King of Jerusalem, in Tyre. This act removed a key Crusader leader and was likely carried out in coordination with Saladin, influencing the outcome of the Third Crusade.

Rashid al-Din Sinan died at Masyaf, having led the Syrian Nizaris for over 30 years. He was succeeded by a new leader. His legacy includes the effective use of assassination as a political tool and the survival of the Nizari state in Syria.

After deposing Myeongjong, military dictator Choe Chung-heon installed Sinjong as the new puppet king. Sinjong was a younger brother of the previous king and had no political experience, making him easily controllable.

Sinjong's reign was entirely ceremonial, with all state affairs managed by Choe Chung-heon's private military regime. The king had no authority over appointments, taxes, or military decisions.

Choe Chung-heon deposed Sinjong after only seven years, citing the king's inability to control factional strife. Sinjong was exiled and replaced by his son Huijong, further entrenching Choe control over the throne.