Mike and economist Nouriel Roubini discussed the world economy at the Global Conference, agreeing at times and differing at others. Regarding sovereign debt, Roubini cited Greece as the tip of the sovereign debt iceberg and warned that if the situation is not tackled by nations worldwide, the result will be either default or high inflation. Mike felt strongly that the best guide to today's economic environment is careful study of how things unfolded in 1973-1975; debt is cheap right now, and companies should be locking in low rates while they can. Watch the Milken/Roubini debate here.