Is this paragraph worded and structured properly?

FYI- Szass Tam is the lich and zulkirs are mage-lords. Meanwhile, Dmitra arranged for a secret meeting between her, Samas, Yaphyll, and Lallara shortly before the Council of Zulkirs was scheduled to convene in Eltabbar at Szass Tam’s request. When Dmitra met with the three mage-lords, she revealed to them that she had discovered that Szass Tam had orchestrated the murders of Druxus and Aznar, betrayed the Thayan legions that had attempted to invade Rashemen, and portrayed the failed assault as a Rashemi attack on Thay in order to create a climate of fear within the country. By effectively and expeditiously solving the crises, the lich wanted to convince the nobles, legions, and common people that he was the one individual who could end the nation’s woes and should be made the supreme ruler of Thay. To prevent Szass Tam from becoming the sole leader of Thay, the three zulkirs agreed to Dmitra’s request for them to pledge that they would oppose any attempt by the undead wizard to attain greater authority.