Japan's Nikkei share average rose more than 2 per cent to 1-1/2-week high on Tuesday after Japan's finance minister said Tokyo will intervene if the yen's "one-sided” rise persists.
The Nikkei gained 2.2 per cent to 16,565.19, the highest closing level since April 28.
Finance Minister Taro Aso on Tuesday reiterated his resolve to intervene in the currency market if the yen's gains last long enough to hurt Japan's fragile economic recovery.
The broader Topix gained 2.2 per cent to 1,334.90 and the JPX-Nikkei Index 400 also added 2.2 per cent to 12,069.89.