President Barack Obama says he and European leaders agree it is imperative that they redouble efforts to reach a climate deal in Copenhagen in December.

The president spoke Tuesday with European Union leaders at the White House on global warming, Afghanistan, Iran, economic recovery and other matters.

The White House meeting came just a month ahead of a global meeting on climate change in Copenhagen as world leaders negotiate a follow-on agreement to the Kyoto Protocol. Obama says the leaders agree that they must take steps before that meeting to ensure it will yield a substantial framework for progress.

European Commission President Jose Manuel Barroso says he emerged from the talks more confident about climate progress.