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  ==== Season 7 ====
  Despite nominally being ruler of Westeros, Cersei's grip on the throne is tenuous, with the Riverlands in upheaval following Arya Stark's massacre of House Frey, the Vale and the North's declaration of Ned Stark's bastard son Jon Snow King in the North, and Tyrion, Yara Greyjoy, Dorne, and the Reach all supporting Daenerys Targaryen, whose fleet has seized Dragonstone. Cersei remains cold and distant after Tommen's suicide, viewing it as a betrayal of their family. With no children left to protect, Cersei's malice and vindictiveness have grown, and she relentlessly seeks to expand her power and destroy her enemies. Cersei reaches out to the King of the Iron Islands, Euron Greyjoy, to form an alliance, but rejects Euron's marriage proposal as she considers him untrustworthy. Euron later ambushes Daenerys' fleet and captures Yara Greyjoy, Ellaria, and Tyene Sand, and presents them as a "gift" to Cersei. She agrees to marry Euron after the war is won; however, she continues her affair with Jaime, no longer attempting to hide their relationship from their servants. Cersei imprisons Ellaria and Tyene in the dungeons, kills Tyene with the same poison used to kill Myrcella, and keeps Ellaria alive to watch her daughter die.
  Tycho Nestoris of the Iron Bank arrives in King's Landing to request repayment of their debt. Cersei requests a fortnight in order to comply. She then has the Lannister and Tarly armies attack Highgarden, defeating the Tyrells. Olenna Tyrell commits suicide following the defeat and gloats to Jaime that she was responsible for poisoning Joffrey. The Tyrells' wealth is transported safely to King's Landing, but the food the Lannisters steal from the Reach is destroyed when Daenerys attacks the caravan with her Dothraki horde and dragon, Drogon. Jaime barely survives the battle and encourages Cersei to consider a ceasefire.
  Tyrion infiltrates the capital to meet with Jaime, and Jaime tells Cersei that Daenerys and Jon want to meet with Cersei to negotiate an armistice while mankind fights the threat of the White Walkers. Cersei is skeptical but agrees, and tells Jaime that she is pregnant. Daenerys and Jon meet with Cersei in the Dragonpit on the outskirts of King's Landing, and present to her a wight captured from the White Walkers as evidence of their threat. Although terrified, Cersei initially refuses to agree to an armistice, as Jon refuses to remain neutral in the war between the Lannisters and Targaryens. Tyrion speaks to Cersei in private, and apparently persuades her to ally with the rival monarchs. However, she later reveals to Jaime that she intends for her enemies to wipe each other out and then attack the victor, and has sent Euron to Essos to transport the Golden Company to Westeros. Disgusted by Cersei's selfishness and shortsightedness, Jaime finally abandons her side and goes north on his own, leaving Cersei alone.