Common concerns among Scandanavian countries include challenges of non-performance (i.e. credit) risk in valuing derivatives.

Nothing is ever as easy as it seems. When the FASB issued FAS 157 (now Topic 820) in September 2006, their goal seemed pretty straightforward. Several iterations and years later, the FASB continues to tinker with the standard. On January 21, 2010 the FASB issued ASU 2010-06-1 which amended Topic 820.