Foreign currency markets in Asia have fallen as investors wait on news over the Greece debt crisis, it has been reported by the Press Association.Slower-than-expected growth in the US also fuelled uncertainty in the markets, where benchmarks across Japan, South Korea, Hong Kong, Australia, Singapore and the Philippines all fell. Taiwan and New Zealand bucked the trend, with a slight increase in the national currencies.Foreign exchange investors are likely to have taken the profits from a recent share rally and adopt a cautious stance ahead of a Greek debt announcement. The debt-ridden country must secure a deal soon to avoid another European Union summit, which requires annual interest expenses to be lowered from ten billion euros to about four billion euros. This equals 103 billion euro when the bonds mature.Australian treasurer Wayne Swan recently told ABC radio: "If that deal is finally done that certainly is a significant advance because, you see, one of the challenges we have in the global economy and one of the challenges we have here locally is there is too much focus on the downside risk."For more information on foreign exchange treasury services and risk management, visit our Corporate FX site