European Union leaders are pushing back a decision on the bloc's efforts to end most emissions of greenhouse gases.
Leaders meeting in Brussels agreed Friday to discuss the EU's long-term plans for tackling climate change at their next summit in June, ahead of a U.N. gathering on the issue in the fall.
Much of the two-day EU summit this week was taken up with haggling over the EU's future relationship with Britain.
Some countries, including France and the Netherlands, had proposed that leaders agree on "an ambitious long-term strategy by 2020 striving for climate neutrality by 2050'' in line with the 2015 Paris climate accord's goal of keeping global warming at 1.5 degrees Celsius (2.7 degrees Fahrenheit).
But Germany and some eastern European countries opposed an explicit reference to the year 2050 for curbing emissions.