The Roshar Kingdom was bordered by two other kingdoms: the Kingdom of Myra and the Kingdom of Wine (as mentioned in earlier chapters).
The golden guards were travelling toward the border, right at the centre of where the Kingdom of Myra and the Kingdom of Wine meet.
These two kingdoms had been at war for decades, engaging in countless battles due to territorial conflicts and border disputes.
Unlike the small Roshar Kingdom, which was like a toddler, disconnected from the world with its strongest person being a mere tier-six wizard, both of these kingdoms have tier-seven wizards.
Tier-seven wizards were the true powerhouses in this world, capable of standing side by side with the greatest forces.
In fact, they all lived in seclusion most of the time, in their own world, without a care for the outside world. This allowed Tier Six wizards to act more unrestrained and they were the peak power most of the time.