U.S. markets were mixed Monday, with political shakeups in the eurozone putting investors on edge. During the weekend, Greek Prime Minister George Papandreou agreed to resign in return for the opposition party agreeing to support the $180 billion bailout fund assembled for the country by the European Commission, He will likely be replaced on an interim basis by former European Central Bank Vice President Lucas Papademos. In Italy, Silvio Berlusconi's future is uncertain, with some observers expecting the beleaguered prime minister would announce his resignation soon. On Wall Street, in early afternoon trading, the Dow Jones industrial average recovered from early losses to add 14.01 points, 0.12 percent, to 11,997.25. The Standard & Poor's 500 index gained 0.50 points, 0.04 percent, to 1,253.73. The Nasdaq composite index shed 3.40 points, 0.13 percent, to 2,682.75. The benchmark 10-year treasury note rose 13/32 to yield 1.994 percent. The euro fell to $1.3752 from Friday's $1.3792. Against the yen, the dollar fell to 78.09 yen from Friday's 78.23 yen. In Tokyo, the Nikkei 225 index lost 0.39 percent, 34.31, to 8,767.09. In London, the FTSE 100 index dropped 0.3 percent, 16.34, to 5,510.82.