Finance chiefs from the Group of 20 major economies on Thursday reaffirmed a G-20 commitment to orderly currency movements as a way to promote world economic growth and ensure stability in financial markets, according to Finance Minister Taro Aso.

Speaking to reporters after the first day of a two-day meeting in Washington, Aso said it was "significant" that the G-20 underscored the commitment when the world economy is gradually picking up but given growing uncertainties over the outlook such as geopolitical risks over North Korea and Syria.

"It is true that there have been positive views about the world economy, but there are growing uncertainties about the outlook. We sometimes see (disorderly) movements in markets as well," Aso said.