Kurn was originally going to assassinate Gowron and fight the Duras himself. Worf, as the older brother, put his weight into the argument to get Kurn to side with Gowron in an effort to restore his family name and honor.
The reason Worf is even present is because it is Picard's duty to select the next chancellor of the High Council under Klingon Law in a direct effort by K'mpec to evade some of the corruption within Klingon politics that could allow someone using a dishonorable method of assassination such as poison to become the chancellor. Assassination via combat is permitted, but methods that hide one's identity such as poison are not. Though in truth, we do know know who poisoned K'mpec. It could have been Gowron, though the implication was that it was Duras.
Worf uses the opportunty to correct the removal of his house's titles and honor by supporting Gowron, who is already the defacto leader of the empire due to there being no legitimate bids for the seat. It seems that women can't serve on the council at this point in the Empire's history, and Duras' son is too young and without victories to his name.
K'mpec also would not have wished for the Empire to side with Romulas, as the Romulans are seen as dishonorable is many circles of the Empire. The Federation is seen as weak, with soft starfleet officers that serve on toys with soft interiors and luxury. Soft and weak, but not dishonorable.
When Starfleet's blockade of the Romulan supplies proves that the Romulans are supplying the Duras sisters, the question is, "was the loss of the Duras caused by the lack of resupply, or by the other houses leaving them due to their exposed connection to the Romulans?"
The House of Duras was powerful, and probably corrupt. But that power held sway even if the laws says that Gowron was to be the new leader. Instead of fight a Civil War and have the Romulans backing it, the Duras sisters could have waited until Duras' boy was older and trained with a blade. Then challenge Gowron for the leadership. Kill him and the Empire would belong to the House of Duras, though possibly not controllably by the sisters.
Worf, in backing Gowron, has to follow though to see that his bid to get his family name restored (partly for his brother). Thus he stays with the Empire for the duration of the Civil War. After it ends, his part in the deal with Gowron has ended. Kurn can now operate the reestablished House of Mogh as per normal within the Empire, and Worf can go back to his job as a Starfleet officer.
This more or less holds save for bumps, like the return of Kahless. But Worf is stripped again during the Klingon-Cardasssian War due to siding against the Empire. His is probably rightly so by Klingon law, as Worf went against the good of the Empire and actively attacked other Klingons in combat. It would not be until the eve of the Dominion War when Worf regained his honor via the end of the hostilities between the Federation and Klingon Empire, and the impression he made on General Martok against the Dominion.
The reason Worf is even present is because it is Picard's duty to select the next chancellor of the High Council under Klingon Law in a direct effort by K'mpec to evade some of the corruption within Klingon politics that could allow someone using a dishonorable method of assassination such as poison to become the chancellor. Assassination via combat is permitted, but methods that hide one's identity such as poison are not. Though in truth, we do know know who poisoned K'mpec. It could have been Gowron, though the implication was that it was Duras.
Worf uses the opportunty to correct the removal of his house's titles and honor by supporting Gowron, who is already the defacto leader of the empire due to there being no legitimate bids for the seat. It seems that women can't serve on the council at this point in the Empire's history, and Duras' son is too young and without victories to his name.
K'mpec also would not have wished for the Empire to side with Romulas, as the Romulans are seen as dishonorable is many circles of the Empire. The Federation is seen as weak, with soft starfleet officers that serve on toys with soft interiors and luxury. Soft and weak, but not dishonorable.
When Starfleet's blockade of the Romulan supplies proves that the Romulans are supplying the Duras sisters, the question is, "was the loss of the Duras caused by the lack of resupply, or by the other houses leaving them due to their exposed connection to the Romulans?"
The House of Duras was powerful, and probably corrupt. But that power held sway even if the laws says that Gowron was to be the new leader. Instead of fight a Civil War and have the Romulans backing it, the Duras sisters could have waited until Duras' boy was older and trained with a blade. Then challenge Gowron for the leadership. Kill him and the Empire would belong to the House of Duras, though possibly not controllably by the sisters.
Worf, in backing Gowron, has to follow though to see that his bid to get his family name restored (partly for his brother). Thus he stays with the Empire for the duration of the Civil War. After it ends, his part in the deal with Gowron has ended. Kurn can now operate the reestablished House of Mogh as per normal within the Empire, and Worf can go back to his job as a Starfleet officer.
This more or less holds save for bumps, like the return of Kahless. But Worf is stripped again during the Klingon-Cardasssian War due to siding against the Empire. His is probably rightly so by Klingon law, as Worf went against the good of the Empire and actively attacked other Klingons in combat. It would not be until the eve of the Dominion War when Worf regained his honor via the end of the hostilities between the Federation and Klingon Empire, and the impression he made on General Martok against the Dominion.