Treaty of Carselai
The treaty of Carselai was a treaty signed at some point prior to the 2000s Canisian invasion of Earth under the auspices of the UP.
First General Tannis of Alpha Canis One attended the negotiations and agreed to sign a draft of the treaty which meant he officially relinquished control of a number of previously-conquered planets (WC: "No Child of Earth" [+]Part of Death Comes to Time, Loading...{"namedep":"No Child of Earth","1":"Death Comes to Time (webcast)"}) and promised non-aggression to other space powers such as the Santine Republic. The Minister attended the peace talks, where he "swallowed insult after insult" and was "made to make sacrifices that [he] couldn't stand to do", tortured by the knowledge that he could upend the negotiations by directly manipulating time and the laws of physics, if not for the promises he had made. (WC: "At the Temple of the Fourth" [+]Part of Death Comes to Time, Loading...{"namedep":"At the Temple of the Fourth","1":"Death Comes to Time (webcast)"})
In fact, although he allowed the Canisians to believe that his participation in the treaty was owed to some unseen "strategic advantage", Tannis, secretly a Time Lord, had entered it as a ploy to drive his fellow Time Lord the Minister out of his senses, goading him into misusing his powers. (WC: "No Child of Earth" [+]Part of Death Comes to Time, Loading...{"namedep":"No Child of Earth","1":"Death Comes to Time (webcast)"}) Successfully brought to a boiling point, the Minister began to use his powers directly on the margins of the Canisians' warfare, causing severe temporal distortions throughout the universe as a side-effect. To mislead the other Time Lords about the nature of the threat they were facing, (WC: "Death Comes to Time" [+]Part of Death Comes to Time, Loading...{"namedep":"Death Comes to Time","1":"Death Comes to Time (webcast)"}) Tannis then sent the vampire assassin Nessican to kill the Time Lords Valentine and Antenor, who were working undercover at a London university as astronomers and noticed black holes which had appeared as a byproduct of the distortions. Meanwhile, Tannis's Canisian fleet attacked the planet Santiny, one of the polities supposedly protected by the treaty — ignoring Admiral Mettna's protests to that effect. Still concealing his infractions to the code, the Minister took advantage of Valentine and Antenor's murders to ask the Seventh Doctor, who'd been helping the resistance on Santiny, to go to Earth while the Minister took over on Santiny, (WC: "At the Temple of the Fourth" [+]Part of Death Comes to Time, Loading...{"namedep":"At the Temple of the Fourth","1":"Death Comes to Time (webcast)"}) where Tannis finally pushed him over the edge when he had the Minister's new companion Sala killed before his eyes. (WC: "No Child of Earth" [+]Part of Death Comes to Time, Loading...{"namedep":"No Child of Earth","1":"Death Comes to Time (webcast)"})