Are we about to be sucked into a currency war? As the world economy continues to splutter, countries are looking for ways to break out of the mire. One way of gaining popularity is to promote growth through making exports cheap. The key to an export-led recovery is to devalue a national currency, thereby lowering the prices of exports. By allowing its currency price to slide, a nation can launch a surreptitious trade war against its commercial rivals. Western nations have for years accused China of taking an unfair trade advantage by keeping its currency, and therefore export prices, artificially low. By allowing their currencies to devalue, Western countries are fighting back.