Unwanted Countries

From an interesting comment thread at Marginal Revolution:

The Finnish government probably would not want reclaim the lost half of the Carelia region from Russia. The Soviet Union impoverished the area during the 60 years that followed WWII, and thus getting it back would bring Finns more harm than good. In fact, Boris Yeltsin's goverment actually tried to sell the area to Finland in 1991, but Finns said no.

Other examples of negative-value regions: Ulster, the West Bank, the Gaza Strip.