The tit-for-tat U.S.-China tariff battle is likely to escalate to a currency war, as many financial market participants have begun to believe Beijing may have started to push down the country's currency intentionally to boost exports.Some traders have become worried that the U.S. administration of President Donald Trump could intervene in the foreign exchange market to stem the appreciation of the dollar against the yuan in a bid to counter China's alleged currency manipulation.With strains between the world's two largest economies showing few signs of easing, the global foreign exchange ma…READ FULL ARTICLE