Currency War of 2009–11 US, and Financial Times journalists have suggested that if China returned to a fixed peg against the dollar this could re-ignite the Currency War, especially if the move coincided with the US presidential election campaign. Also in March 2012, Brazil's president Rousseff said her country was still experiencing undesirable upwards pressure on her currency, with her Finance Minister Guido Mantega saying Brazil will no longer "play the fool" and allow others to get away with competitive devaluation, announcing new measures aimed at limiting further appreciation for the Real. In June 2012, the "Financial Times" reported that while international trade remained
Currency substitution currency substitution happens when a country adopts a foreign currency as its sole legal tender, and ceases to issue the domestic currency. Another effect of a country adopting a foreign currency as its own is that the country gives up all power to vary its exchange rate. There are a small number of countries adopting a foreign currency as legal tender. Full currency substitution has mostly occurred in Latin America, the Caribbean and the Pacific, as many countries in those regions see the United States Dollar as a stable currency compared to the national one. For example, Panama underwent full