system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout New Vegas] Does Mr House plan on eventually having peaceful relationships with both the NCR and the Legion, or does he think he can defend his territories against them?

It would be ideal for him to be on at least neutral terms with both groups, but he made an enemy of both of them after he took Hoover Dam. It's very likely both groups will attempt counterattacks in the future.
gpt
House thinks that he, a pre-War genius, can play off these post-apocalyptic tribals easily. He controls the water from Lake Mead and the electricity from Hoover Dam, giving him unparalleled negotiating power against the NCR, and he dangles the threat of the Legion in front of them, offering himself as a buffer state between the NCR heartlands and the savage Legion. His idea of a peaceful relationship with the NCR is economic warfare, wringing out concessions with his clean water and plentiful energy, taking in NCR money through its rich tourists, and wooing them and the best and brightest to his side until he gets what he wants.

Meanwhile, he sees Caesar's Legion as a big threat to the NCR... but as an entity he can manipulate or have few concerns about due to his technological advantage over them. With his upgraded Securitrons, he has such a material advantage in warfare compared to the inferior tribals that they represent little concern to him. Especially because if there is a war, the NCR will be forced to deploy on his side and provide meat shields for his robots since the NCR can not afford Lake Mead or Hoover Dam being ceded to the Legion. His biggest worry is that Caesar will die and that the Legion will implode, galvanizing the NCR to rebel against his wishes.

And most importantly, House thinks that this is the only option. He does not really consider that people will go against his plans, that he has underestimated his foes, or that he has overestimated himself, because he thinks he's the smartest man in the room every time.