Tony Dwyer, Canaccord Genuity Chief Market Strategist, says historic excess liquidity is what is driving markets higher. Kathy Jones, Schwab Center for Financial Research Chief Fixed Income Strategist, says credit spreads are about as tight as they can go right now. Kit Juckes, Societe Generale Chief FX Strategist, discusses what's next for central banks. Jacob Lew, Former U.S. Treasury Secretary, sees a long, hard winter ahead without additional fiscal support.