People walk past signs reading in Spanish &quot;YPF, 100 percent public&quot; in Buenos Aires, Argentina, Thursday April 19, 2012. Argentina's government showed no signs of backing down Thursday from expropriating a Spanish company's controlling stake in YPF, Argentina's formerly state-owned energy company, shrugging off international condemnation while finding overwhelming support for the plan in congress. (AP Photo/Natacha Pisarenko)