You will go to war at some point, it is inevitable. This guide explains How To Make Peace In Mount & Blade II Bannerlord as the user-interface doesn’t seem to support the ability to declare war or sign a peace agreement during this period of Early Access.
Whether you own a kingdom or join another, you will eventually be thrown into war. It’s also part of the main quest line. Later in the game, after you have found all the Nobles and reunited the Dragon Banner, you will be battling against an ever-growing conspiracy. At this point, several Empire factions will do their best to take you down. Fighting them face on is a difficult and expensive challenge, even if you know all the money making tricks. An easier, cheaper and safer alternative is to beat them with love. Or peace, peace is more accurate.
How To Make Peace In Mount & Blade II BannerlordIf you have already checked out the Kingdom interface, you will see that you can both declare war and barter for peace. However, both of these functions do not appear to be working correctly yet as both are constantly blacked out. However, there is still a way to discuss peace with your enemies. All you have to do is locate an enemy general out in the field. Approach their party and speak with them.
Ask them to discuss something else and you have the option of bartering for peace. It’s usually only a few thousand, which is much cheaper than fighting it out. Alternatively, you can convince them to betray their original cause and join your Kingdom.