EU members have argued overnight over Britain's membership, even as German Chancellor Angela Merkel insists there's a will to keep the country in the bloc. Yiming Woo reports.
British Prime Minister David Cameron leaves the European Union summit after a long night debating the future of his country's membership. He wants a credible deal to sell to the British public, including concessions to side-step EU regulation and cut immigration. While other members are digging in their heels, German Chancellor Angela Merkel is optimistic. (SOUNDBITE) (German) GERMAN CHANCELLOR, ANGELA MERKEL, SAYING: "Everyone wished to keep Britain as a member of the European Union. All of Britain's different requests which were on the agenda were discussed, and it became clear that not everyone around the table found it all that easy to agree to those requests, but there is a will." Talks will continue on the second day of the summit. No country has ever voted to leave the European Union. A British exit could deal a blow to the UK economy and certainly damage the EU's standing and self confidence.