Europe will unveil measures in the autumn requiring sovereign credit default swaps (CDS) to be registered, Michel Barnier, the European commissioner for internal market regulation, said on Monday.

"At this stage, I'm not making any accusations, but in October, we intend to deal with this matter very severely," Barnier told reporters at a press briefing on developments in financial regulation. "At the very least we have to ensure responsibility of those using these financial products. We need to