Japanese officials say intervention not over yet

Japanese officials continued their battle with foreign exchange markets on Thursday 18 March as the yen surged against the dollar, warning they will act against sudden moves, but only when necessary.

"We will intervene if needed and won't when it's not needed," Finance Minister Sadakazu Tanigaki told a parliamentary committee, adding that Japan "does not intervene by aiming at specific levels".

However, Japan's top currency diplomat reiterated on Thursday that there was no change in Japan's vi