A、It has been influenced by war. B、It is devalued by its government. C、It is more competitive than before. D、It has turned into

In recent months a string of countries, from Japan to Switzerland, Colombia to Israel, have tried to drive down the value of their currencies. Some experts call it "competitive devaluation." Others, though, argue that it is nothing short of a currency war—and far from boosting global recovery, it threatens to undermine it.
So concerned are policymakers that the issue looks set to dominate talks onFridayat a meeting of finance ministers and central bankers. Dominique Strauss-Kahn, managing director of the International Monetary Fund, which hosts the meeting in Washington, set out the concerns in the Financial Times on Tuesday. "There is clearly the idea beginning to circulate that currencies can be used as a policy weapon. Translated into action, such an idea would represent a very serious risk to the global recovery," he said.
3.  What has happened ’to Israel’s currency?
4.  What can we learn from Dominique Strauss-Kahn?