On the margins of the Group of 20 (G20) finance conference in Indonesia, U.S. Treasury Secretary Janet Yellen held bilateral talks with senior officials from Saudi Arabia, Australia, South Africa, and Singapore, the Treasury Department announced on Saturday.

Yellen criticized Russia’s “unprovoked conflict against Ukraine, which has produced global spillovers in food, energy, and other commodities” during the talks and urged nations to support a price ceiling on Russian oil to stop the flow of funds to its military, according to the Treasury.

She also underscored the importance of taking action at the G20 to address the global food security crisis, it added.

Yellen met with Saudi Arabia’s Minister of Finance Mohammed Al-Jadaan, Treasurer of Australia Jim Chalmers, South Africa’s Minister of Finance Enoch Godongwana, and Singapore’s Deputy Prime Minister Lawrence Wong, Treasury said.

She also met for dinner with Canadian Finance Minister Chrystia Freeland, a Treasury official said.