What is the setting of Steal the Dragon by Patricia Briggs?

Steal the Dragon takes place in a fictional world, in the two countries of Darran and Reth. Darran and Reth have long been at war with one another, and have destroyed much of the countryside with their fighting, as is described with the statement, "Several once-fertile fields lay barren, the salt from the mines that were the region's greatest source of wealth turning the rich earth into sterile soil that drifted in the winds, a silent testament to the centuries-old feud between Darran and its neighbor Reth" (p. 23).