CR Note: This series is from reader "some investor guy". Part 1: How Large is the Outstanding Value of Sovereign Bonds? Part 2. How Often Have Sovereign Countries Defaulted in the Past? Part 2B: More on Historic Sovereign Default Research Part 3. What are the Market Estimates of the Probabilities of Default? Part 4. What are Total Estimated Losses on Sovereign Bonds Due to Default? Part 5A. What Happens If Things Go Really Badly? $15 Trillion of Sovereign Debt in DefaultIn Part 5A, I showed a Really Bad scenario consistent with some very bad historic default rates for sovereign debt. That produced an estimate of $15.3 trillion of defaulted sovereign debt, with $7.5 to $10.5 trillion of losses.In today's post, we look at the effects of sovereign default on credit default swaps, interest rate swaps and options, and currency exchange contracts.