RIO DE JANEIRO -- Brazil's president says he is going to this week's Group of 20 economic meeting in Korea to push for lowering trade barriers and ending what he calls a "currency war."Brazil's leader Luiz Inacio Lula da Silva says Monday the global economy has not recovered from the crisis that began in 2008. He says that recovery requires stimulating consumer demand in the U.S. and Europe. Silva says that all nations should lower trade barriers to help spark a sharp economic recovery. He didn't mention the tariffs Brazil itself imposes. He again lashed out at China and the U.S. for what he says is the artificial devaluation of their currencies. Silva says that is resulting in global trade imbalances that keep economies from recovering.