Finance Minister Taro Aso, who also serves as deputy prime minister, is arranging to meet with U.S. Vice President Joe Biden when he goes to Washington this week for a gathering of Group of 20 financial chiefs, government sources said Tuesday.

Aso and Biden are expected to discuss economic policies and developments regarding North Korea, the sources said.

Aso said he will explain to his G-20 counterparts that the purpose of the Bank of Japan's monetary easing is to overcome the country's prolonged deflation, not to lower the yen.