Markets still digesting an unexpectedly cautious message from the Federal Reserve will get more food for thought this week with U.S. inflation data and potentially rising risks of a Greek exit from the euro zone. The euro hit a 12-year low below $1.05 against the dollar at the start of last week only to jump back to $1.10 on Wednesday – its biggest one-day rise in six years – after the Fed signaled it was in no hurry to raise rates after all.