You are still thinking like a railroader.silva wrote: Nah, I dont like this method. What if the players dont care for your story, or for political conflicts to begin with ? Then you have a setup that you find awesome yourself and will probrably have tons of fun running, but the same wont hold true for your players....
To a sandboxer, the war between two political figures is just a bunch of opportunities. Do they investigate the intrigues and try to use what they find to gather allies? Do they hire themselves to a faction for hack-and-slash fun? Do they try to protect the people from the fallout from the war? Do they try to build a temple or a business while the city around them is being fought over by two ruthless tyrants? Do they simply compete with agents of the two forces who are trying to delve the same ruins for the same magic loot?
The possibilities are endless and it's the role of the DM to provide the backdrop for that to happen and to adjust to player actions. For example, if they loot a lot of the ruins that the Merchant Prince's forces were going to loot, they might tip the balance for the other guy or draw the Prince's ire so that he frames them for some attack.