Scotland ? Finance officials from rich and developing countries have pledged to maintain emergency support for their economies until recovery is assured, but failed to reach a clear agreement to bear the cost of fighting climate change.

There was also a mixed reaction among the Group of 20 leading rich and emerging nations Saturday to a British-led push to consider a fund for bank bailouts, possibly financed by a tax on financial transactions, to ensure that taxpayers don’t bear the brunt of any future rescues.

The grouping — representing around 90 percent of the world’s wealth, 80 percent of world trade and two-thirds of the world’s population — said in a statement after talks in St. Andrews, Scotland, that economic recovery is “uneven and remains dependent on policy support.”