Demonstrators from the JP Evita political group hold a sign that reads “YPF – We’re going for everything” as they shout slogans during a pro-government rally outside of the Casa Rosada presidential palace in Buenos Aires, April 16, 2012. Argentina’s government said on Monday it would expropriate 51 percent of leading energy company YPF, a move that could lead to further economic isolation of the country. YPF, controlled by Spain’s Repsol, has been under intense pressure from the center-left government and its share price has plunged due to months of speculation about a government takeover. REUTERS/Marcos Brindicci (ARGENTINA – Tags: POLITICS ENERGY BUSINESS CIVIL UNREST)