Japan and the United States failed to reach a much-awaited breakthrough, seen as vital to advancing the 12-country Trans-Pacific Partnership negotiations, at a three-day meeting on the proposed trade accord that wrapped in Sydney on Monday.

The lack of progress between the largest TPP economies clouds the goal of striking a broad deal by the end of the year, as proposed by the United States.

After meeting with U.S. Trade Representative Michael Froman on Monday morning on the margin of the plenary session, TPP minister Akira Amari said the finish line for their bilateral talks is not yet in sight.