Washington spills over to Wall Street. Stocks tumble as talks to avert the fiscal cliff fall apart. NBR's Washington Bureau Chief Darren Gersh has reaction from both sides of the aisle. Tonight's "Market Monitor" guest is not scared off by cliff worries. He's buying stocks and believes the markets will do well in the new year. NBR's Susie Gharib speaks with Steinberg Global Asset Management's Richard Steinberg. And, Warren Bufffett has plenty to say on taxes and the fiscal cliff. We'll speak with his long-time friend and Fortune Magazine journalist Carol Loomis.