D'deridex's death had been arranged by Admiral Valdore and the Praetor's key advisor First Consul T'Leikha due to his increasing obsession with the invasion of Haakona. It was made to look like a skimmer accident.
Following the defeat at the Battle of Cheron Karzan directed Romulan negotiators to only use audio channels in treaty negotiations, believing it to be an advantage if Earth and its allies did not learn of their connection to the Vulcan race. Both he and Valdore felt that a defined boundary behind a Neutral Zone would give Romulans the time they needed to rebuild their strength before renewing their fight. (ENT novel: Beneath the Raptor's Wing)
|Praetors of the Romulan Star Empire|
|primary universe||Pontilus • Sartorix • Colius • Comilius • D'deridex • Gileus I • Varus III • Karzan • Vrax • Gaius • Aratenik • Dralath • Darok • Narviat • Neral • Hiren • Shinzon • Tal'Aura • Gell Kamemor • Chulan • Taris • Sela|
|the Praetorate||Eveh tr'Anierh • Hloal t’Illialhlae • Ahrm’n tr‘Kiell • Urellh tr'Maehhli • Gurrhim tr'Siedhri|
|Kelvin timeline||Bervas • Decius|