Finance leaders from the Group of 20 major economies shared their concerns Saturday in Buenos Aires over escalating global trade friction stemming from U.S. protectionist measures.

Following Saturday's session of the two-day meeting, a Japanese government source said such concerns were expressed by most participants.

Finance Minister Taro Aso said he criticized the United States at the meeting for its recent spate of moves to increase tariffs on a broad range of imports, telling his G20 counterparts, "Inward-looking policies would benefit no country."